diff --git a/justfile b/justfile
index 46fcc48e..dfb95297 100644
--- a/justfile
+++ b/justfile
@@ -58,3 +58,6 @@ release TAG:
 
 kill TAG:
 	npx sqd squid:kill "rubick@{{TAG}}"
+
+update-deps:
+	npx npm-check-updates -u
diff --git a/package-lock.json b/package-lock.json
index 4ad085be..3f9c3548 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -6,33 +6,33 @@
     "": {
       "name": "hydra-template",
       "dependencies": {
-        "@polkadot/types": "^6.8.1",
-        "@subsquid/cli": "^0.1.5",
+        "@polkadot/types": "^7.14.2",
+        "@subsquid/cli": "^0.2.1",
         "@subsquid/graphql-server": "^0.1.5",
-        "@subsquid/ss58": "^0.0.4",
-        "@subsquid/substrate-processor": "^0.3.0",
-        "@types/signale": "^1.4.2",
-        "axios": "^0.24.0",
-        "class-validator": "^0.13.1",
+        "@subsquid/ss58": "^0.1.0",
+        "@subsquid/substrate-processor": "^0.6.1",
+        "@types/signale": "^1.4.4",
+        "axios": "^0.26.1",
+        "class-validator": "^0.13.2",
         "dotenv": "^16.0.0",
         "inflected": "^2.1.0",
         "md5": "^2.3.0",
-        "nanoid": "^3.1.30",
+        "nanoid": "^3.3.2",
         "signale": "^1.4.0",
         "type-graphql": "^1.2.0-rc.1"
       },
       "devDependencies": {
         "@subsquid/substrate-metadata-explorer": "^0.0.7",
-        "@subsquid/substrate-typegen": "^0.2.3",
+        "@subsquid/substrate-typegen": "^0.4.1",
         "@types/chai": "^4.3.0",
         "@types/inflected": "^1.1.29",
         "@types/md5": "^2.3.2",
-        "@types/mocha": "^9.0.0",
-        "@types/pg": "^8.6.1",
-        "chai": "^4.3.4",
-        "mocha": "^9.1.3",
-        "ts-node": "^10.4.0",
-        "typescript": "~4.4.2"
+        "@types/mocha": "^9.1.0",
+        "@types/pg": "^8.6.5",
+        "chai": "^4.3.6",
+        "mocha": "^9.2.2",
+        "ts-node": "^10.7.0",
+        "typescript": "~4.6.3"
       }
     },
     "node_modules/@apollo/protobufjs": {
@@ -179,9 +179,9 @@
       }
     },
     "node_modules/@babel/runtime": {
-      "version": "7.16.3",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.16.3.tgz",
-      "integrity": "sha512-WBwekcqacdY2e9AF/Q7WLFUWmdJGJTkbjqTjoMDgXkVZ3ZRUvOPsLb5KdwISoQVsbP+DQzVZW4Zhci0DvpbNTQ==",
+      "version": "7.17.8",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.17.8.tgz",
+      "integrity": "sha512-dQpEpK0O9o6lj6oPu0gRDbbnk+4LeHlNcBpspf6Olzt3GIX4P1lWF1gS+pHLDFlaJvbR6q7jCfQ08zA4QJBnmA==",
       "dependencies": {
         "regenerator-runtime": "^0.13.4"
       },
@@ -310,14 +310,20 @@
       "integrity": "sha512-GaHYm+c0O9MjZRu0ongGBRbinu8gVAMd2UZjji6jVmqKtZluZnptXGWhz1E8j8D2HJ3f/yMxKAUC0b+57wncIw=="
     },
     "node_modules/@noble/hashes": {
-      "version": "0.4.1",
-      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-0.4.1.tgz",
-      "integrity": "sha512-Qxy9mZoDf5SyFrQ8hpWHeMZ2Scmb9BAz/lt23sKdr/QHnACW9dD6S+/WVJHd3R/BPoNHcUYWXoXXe74cxSEYoA=="
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@noble/hashes/-/hashes-1.0.0.tgz",
+      "integrity": "sha512-DZVbtY62kc3kkBtMHqwCOfXrT/hnoORy5BJ4+HU1IR59X0KWAOqsfzQPcUl/lQLlG7qXbe/fZ3r/emxtAl+sqg=="
     },
     "node_modules/@noble/secp256k1": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/@noble/secp256k1/-/secp256k1-1.3.0.tgz",
-      "integrity": "sha512-wuFthUc6Ul4xflhY5u1+p1bDILPzVEisekxt5M+iLg4R+gG6+k2jnRR19sC9fMtzlsN5sKloBwprziDS0XlmyQ=="
+      "version": "1.5.5",
+      "resolved": "https://registry.npmjs.org/@noble/secp256k1/-/secp256k1-1.5.5.tgz",
+      "integrity": "sha512-sZ1W6gQzYnu45wPrWx8D3kwI2/U29VYTx9OjbDAd7jwRItJ0cSTMPRL/C8AWZFn9kWFLQGqEXVEE86w4Z8LpIQ==",
+      "funding": [
+        {
+          "type": "individual",
+          "url": "https://paulmillr.com/funding/"
+        }
+      ]
     },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
@@ -982,225 +988,105 @@
         "@octokit/openapi-types": "^11.2.0"
       }
     },
-    "node_modules/@polkadot/networks": {
-      "version": "8.1.2",
-      "resolved": "https://registry.npmjs.org/@polkadot/networks/-/networks-8.1.2.tgz",
-      "integrity": "sha512-OPjEjEdlErZW0dv1WNIEAaOja8g2ynscwM4pQbVWzbpACuM1xziPgfDF74M0R8fMOxr5EJOVbKsvOSBytw+TDg==",
-      "dependencies": {
-        "@babel/runtime": "^7.16.3"
-      },
-      "engines": {
-        "node": ">=14.0.0"
-      }
-    },
-    "node_modules/@polkadot/types": {
-      "version": "6.11.1",
-      "resolved": "https://registry.npmjs.org/@polkadot/types/-/types-6.11.1.tgz",
-      "integrity": "sha512-utdAL7XrZmKWTk7iT/cUdr1FD4oaDT9OhZ1yRxilEiMk58QZg4Ntm8POH1Sq/l8/JvLcheE0qy1uZhxK3FS0Rw==",
-      "dependencies": {
-        "@babel/runtime": "^7.16.3",
-        "@polkadot/types-known": "6.11.1",
-        "@polkadot/util": "^8.1.2",
-        "@polkadot/util-crypto": "^8.1.2",
-        "rxjs": "^7.4.0"
-      },
-      "engines": {
-        "node": ">=14.0.0"
-      }
-    },
-    "node_modules/@polkadot/types-known": {
-      "version": "6.11.1",
-      "resolved": "https://registry.npmjs.org/@polkadot/types-known/-/types-known-6.11.1.tgz",
-      "integrity": "sha512-Vl4WJu56dNvMoXwJ+v9xO0rlWLocb/1KMNczG8UklxrAMfkkgCDIxGjkx/TpgCEfBLxBYavu9MQqQZhJulSP8g==",
-      "dependencies": {
-        "@babel/runtime": "^7.16.3",
-        "@polkadot/networks": "^8.1.2",
-        "@polkadot/types": "6.11.1",
-        "@polkadot/util": "^8.1.2"
-      },
-      "engines": {
-        "node": ">=14.0.0"
-      }
-    },
-    "node_modules/@polkadot/types-known/node_modules/@babel/runtime": {
-      "version": "7.16.3",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.16.3.tgz",
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-      "dependencies": {
-        "regenerator-runtime": "^0.13.4"
-      },
-      "engines": {
-        "node": ">=6.9.0"
-      }
-    },
-    "node_modules/@polkadot/types-known/node_modules/@polkadot/networks": {
-      "version": "8.1.2",
-      "resolved": "https://registry.npmjs.org/@polkadot/networks/-/networks-8.1.2.tgz",
-      "integrity": "sha512-OPjEjEdlErZW0dv1WNIEAaOja8g2ynscwM4pQbVWzbpACuM1xziPgfDF74M0R8fMOxr5EJOVbKsvOSBytw+TDg==",
-      "dependencies": {
-        "@babel/runtime": "^7.16.3"
-      },
-      "engines": {
-        "node": ">=14.0.0"
-      }
-    },
-    "node_modules/@polkadot/types-known/node_modules/@polkadot/types": {
-      "version": "6.11.1",
-      "resolved": "https://registry.npmjs.org/@polkadot/types/-/types-6.11.1.tgz",
-      "integrity": "sha512-utdAL7XrZmKWTk7iT/cUdr1FD4oaDT9OhZ1yRxilEiMk58QZg4Ntm8POH1Sq/l8/JvLcheE0qy1uZhxK3FS0Rw==",
-      "dependencies": {
-        "@babel/runtime": "^7.16.3",
-        "@polkadot/types-known": "6.11.1",
-        "@polkadot/util": "^8.1.2",
-        "@polkadot/util-crypto": "^8.1.2",
-        "rxjs": "^7.4.0"
-      },
-      "engines": {
-        "node": ">=14.0.0"
-      }
-    },
-    "node_modules/@polkadot/types-known/node_modules/@polkadot/util": {
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-      "dependencies": {
-        "@babel/runtime": "^7.16.3",
-        "@polkadot/x-bigint": "8.1.2",
-        "@polkadot/x-global": "8.1.2",
-        "@polkadot/x-textdecoder": "8.1.2",
-        "@polkadot/x-textencoder": "8.1.2",
-        "@types/bn.js": "^4.11.6",
-        "bn.js": "^4.12.0",
-        "ip-regex": "^4.3.0"
-      },
-      "engines": {
-        "node": ">=14.0.0"
-      }
-    },
-    "node_modules/@polkadot/types-known/node_modules/@polkadot/util-crypto": {
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-      "resolved": "https://registry.npmjs.org/@polkadot/util-crypto/-/util-crypto-8.1.2.tgz",
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-      "dependencies": {
-        "@babel/runtime": "^7.16.3",
-        "@noble/hashes": "0.4.1",
-        "@noble/secp256k1": "^1.3.0",
-        "@polkadot/networks": "8.1.2",
-        "@polkadot/util": "8.1.2",
-        "@polkadot/wasm-crypto": "^4.5.1",
-        "@polkadot/x-bigint": "8.1.2",
-        "@polkadot/x-noble-hashes": "8.1.2",
-        "@polkadot/x-noble-secp256k1": "8.1.2",
-        "@polkadot/x-randomvalues": "8.1.2",
-        "ed2curve": "^0.3.0",
-        "micro-base": "^0.9.0",
-        "tweetnacl": "^1.0.3"
-      },
-      "engines": {
-        "node": ">=14.0.0"
-      },
-      "peerDependencies": {
-        "@polkadot/util": "8.1.2"
-      }
-    },
-    "node_modules/@polkadot/types-known/node_modules/@polkadot/wasm-crypto": {
-      "version": "4.5.1",
-      "resolved": "https://registry.npmjs.org/@polkadot/wasm-crypto/-/wasm-crypto-4.5.1.tgz",
-      "integrity": "sha512-Cr21ais3Kq3aedIHZ3J1tjgeD/+K8FCiwEawr0oRywNBSJR8wyuZMePs4swR/6xm8wbBkpqoBVHz/UQHqqQJmA==",
+    "node_modules/@polkadot/keyring": {
+      "version": "8.7.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/keyring/-/keyring-8.7.1.tgz",
+      "integrity": "sha512-t6ZgQVC+nQT7XwbWtEhkDpiAzxKVJw8Xd/gWdww6xIrawHu7jo3SGB4QNdPgkf8TvDHYAAJiupzVQYAlOIq3GA==",
       "dependencies": {
-        "@babel/runtime": "^7.16.3",
-        "@polkadot/wasm-crypto-asmjs": "^4.5.1",
-        "@polkadot/wasm-crypto-wasm": "^4.5.1"
+        "@babel/runtime": "^7.17.8",
+        "@polkadot/util": "8.7.1",
+        "@polkadot/util-crypto": "8.7.1"
       },
       "engines": {
         "node": ">=14.0.0"
       },
       "peerDependencies": {
-        "@polkadot/util": "*",
-        "@polkadot/x-randomvalues": "*"
+        "@polkadot/util": "8.7.1",
+        "@polkadot/util-crypto": "8.7.1"
       }
     },
-    "node_modules/@polkadot/types-known/node_modules/@polkadot/wasm-crypto-asmjs": {
-      "version": "4.5.1",
-      "resolved": "https://registry.npmjs.org/@polkadot/wasm-crypto-asmjs/-/wasm-crypto-asmjs-4.5.1.tgz",
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+    "node_modules/@polkadot/networks": {
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+      "resolved": "https://registry.npmjs.org/@polkadot/networks/-/networks-8.7.1.tgz",
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       "dependencies": {
-        "@babel/runtime": "^7.16.3"
+        "@babel/runtime": "^7.17.8",
+        "@polkadot/util": "8.7.1",
+        "@substrate/ss58-registry": "^1.17.0"
       },
       "engines": {
         "node": ">=14.0.0"
       }
     },
-    "node_modules/@polkadot/types-known/node_modules/@polkadot/x-global": {
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+      "resolved": "https://registry.npmjs.org/@polkadot/types/-/types-7.14.2.tgz",
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       "dependencies": {
-        "@babel/runtime": "^7.16.3"
+        "@babel/runtime": "^7.17.8",
+        "@polkadot/keyring": "^8.7.1",
+        "@polkadot/types-augment": "7.14.2",
+        "@polkadot/types-codec": "7.14.2",
+        "@polkadot/types-create": "7.14.2",
+        "@polkadot/util": "^8.7.1",
+        "@polkadot/util-crypto": "^8.7.1",
+        "rxjs": "^7.5.5"
       },
       "engines": {
         "node": ">=14.0.0"
       }
     },
-    "node_modules/@polkadot/types-known/node_modules/@polkadot/x-randomvalues": {
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+    "node_modules/@polkadot/types-augment": {
+      "version": "7.14.2",
+      "resolved": "https://registry.npmjs.org/@polkadot/types-augment/-/types-augment-7.14.2.tgz",
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       "dependencies": {
-        "@babel/runtime": "^7.16.3",
-        "@polkadot/x-global": "8.1.2"
+        "@babel/runtime": "^7.17.8",
+        "@polkadot/types": "7.14.2",
+        "@polkadot/types-codec": "7.14.2",
+        "@polkadot/util": "^8.7.1"
       },
       "engines": {
         "node": ">=14.0.0"
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+    "node_modules/@polkadot/types-codec": {
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+      "resolved": "https://registry.npmjs.org/@polkadot/types-codec/-/types-codec-7.14.2.tgz",
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-        "@polkadot/x-global": "8.1.2"
+        "@babel/runtime": "^7.17.8",
+        "@polkadot/util": "^8.7.1"
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+      "resolved": "https://registry.npmjs.org/@polkadot/types-create/-/types-create-7.14.2.tgz",
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-        "@babel/runtime": "^7.16.3",
-        "@polkadot/x-global": "8.1.2"
+        "@babel/runtime": "^7.17.8",
+        "@polkadot/types-codec": "7.14.2",
+        "@polkadot/util": "^8.7.1"
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-      "dependencies": {
-        "@babel/runtime": "^7.16.3",
-        "@polkadot/x-bigint": "8.1.2",
-        "@polkadot/x-global": "8.1.2",
-        "@polkadot/x-textdecoder": "8.1.2",
-        "@polkadot/x-textencoder": "8.1.2",
-        "@types/bn.js": "^4.11.6",
-        "bn.js": "^4.12.0",
+      "version": "8.7.1",
+      "resolved": "https://registry.npmjs.org/@polkadot/util/-/util-8.7.1.tgz",
+      "integrity": "sha512-XjY1bTo7V6OvOCe4yn8H2vifeuBciCy0gq0k5P1tlGUQLI/Yt0hvDmxcA0FEPtqg8CL+rYRG7WXGPVNjkrNvyQ==",
+      "dependencies": {
+        "@babel/runtime": "^7.17.8",
+        "@polkadot/x-bigint": "8.7.1",
+        "@polkadot/x-global": "8.7.1",
+        "@polkadot/x-textdecoder": "8.7.1",
+        "@polkadot/x-textencoder": "8.7.1",
+        "@types/bn.js": "^5.1.0",
+        "bn.js": "^5.2.0",
         "ip-regex": "^4.3.0"
       },
       "engines": {
@@ -1208,39 +1094,37 @@
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@@ -14361,9 +14060,9 @@
       "integrity": "sha512-7vO7n28+aYO4J+8w96AzhmU8G+Y/xpPDJz/se19ICsqj/momRbb9mh9ZUtkoJ5X3nTnPdhEJyc0qnM6yAsHBaA=="
     },
     "nanoid": {
-      "version": "3.1.30",
-      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.1.30.tgz",
-      "integrity": "sha512-zJpuPDwOv8D2zq2WRoMe1HsfZthVewpel9CAvTfc/2mBD1uUT/agc5f7GHGWXlYkFvi1mVxe4IjvP2HNrop7nQ=="
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.2.tgz",
+      "integrity": "sha512-CuHBogktKwpm5g2sRgv83jEy2ijFzBwMoYA60orPDR7ynsLijJDqgsi4RDGj3OJpy3Ieb+LYwiRmIOGyytgITA=="
     },
     "natural-orderby": {
       "version": "2.0.3",
@@ -15808,11 +15507,11 @@
       }
     },
     "rxjs": {
-      "version": "7.4.0",
-      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.4.0.tgz",
-      "integrity": "sha512-7SQDi7xeTMCJpqViXh8gL/lebcwlp3d831F05+9B44A4B0WfsEwUQHR64gsH1kvJ+Ep/J9K2+n1hVl1CsGN23w==",
+      "version": "7.5.5",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-7.5.5.tgz",
+      "integrity": "sha512-sy+H0pQofO95VDmFLzyaw9xNJU4KTRSwQIGM6+iG3SypAtCiLDzpeG8sJrNCWn2Up9km+KhkvTdbkrdy+yzZdw==",
       "requires": {
-        "tslib": "~2.1.0"
+        "tslib": "^2.1.0"
       }
     },
     "safe-buffer": {
@@ -16373,9 +16072,9 @@
       "integrity": "sha512-whw60l7r+8ZU8Tu/Uc2yxtc4ZTZbR/PF3u1IPNKGQ6p8EICLb3Z2lAgoqw9bqYd8IkgnsaOcLzYHFckjqNsf0g=="
     },
     "ts-node": {
-      "version": "10.4.0",
-      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-10.4.0.tgz",
-      "integrity": "sha512-g0FlPvvCXSIO1JDF6S232P5jPYqBkRL9qly81ZgAOSU7rwI0stphCgd2kLiCrU9DjQCrJMWEqcNSjQL02s6d8A==",
+      "version": "10.7.0",
+      "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-10.7.0.tgz",
+      "integrity": "sha512-TbIGS4xgJoX2i3do417KSaep1uRAW/Lu+WAL2doDHC0D6ummjirVOXU5/7aiZotbQ5p1Zp9tP7U6cYhA0O7M8A==",
       "dev": true,
       "requires": {
         "@cspotcode/source-map-support": "0.7.0",
@@ -16389,6 +16088,7 @@
         "create-require": "^1.1.0",
         "diff": "^4.0.1",
         "make-error": "^1.1.1",
+        "v8-compile-cache-lib": "^3.0.0",
         "yn": "3.1.1"
       },
       "dependencies": {
@@ -16497,9 +16197,9 @@
       }
     },
     "typescript": {
-      "version": "4.4.4",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.4.4.tgz",
-      "integrity": "sha512-DqGhF5IKoBl8WNf8C1gu8q0xZSInh9j1kJJMqT3a94w1JzVaBU4EXOSMrz9yDqMT0xt3selp83fuFMQ0uzv6qA==",
+      "version": "4.6.3",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-4.6.3.tgz",
+      "integrity": "sha512-yNIatDa5iaofVozS/uQJEl3JRWLKKGJKh6Yaiv0GLGSuhpFJe7P3SbHZ8/yjAHRQwKRoA6YZqlfjXWmVzoVSMw==",
       "dev": true
     },
     "unique-filename": {
@@ -16587,6 +16287,12 @@
       "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
       "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg=="
     },
+    "v8-compile-cache-lib": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.0.tgz",
+      "integrity": "sha512-mpSYqfsFvASnSn5qMiwrr4VKfumbPyONLCOPmsR3A6pTY/r0+tSaVbgPWSAIuzbk3lCTa+FForeTiO+wBQGkjA==",
+      "dev": true
+    },
     "validate-npm-package-license": {
       "version": "3.0.4",
       "resolved": "https://registry.npmjs.org/validate-npm-package-license/-/validate-npm-package-license-3.0.4.tgz",
@@ -16743,9 +16449,9 @@
       "integrity": "sha1-tDFbtCFKPXBY6+7okuE/ok2YsHU="
     },
     "workerpool": {
-      "version": "6.1.5",
-      "resolved": "https://registry.npmjs.org/workerpool/-/workerpool-6.1.5.tgz",
-      "integrity": "sha512-XdKkCK0Zqc6w3iTxLckiuJ81tiD/o5rBE/m+nXpRCB+/Sq4DqkfXZ/x0jW02DG1tGsfUGXbTJyZDP+eu67haSw==",
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/workerpool/-/workerpool-6.2.0.tgz",
+      "integrity": "sha512-Rsk5qQHJ9eowMH28Jwhe8HEbmdYDX4lwoMWshiCXugjtHqMD9ZbiqSDLxcsfdqsETPzVUtX5s1Z5kStiIM6l4A==",
       "dev": true
     },
     "wrap-ansi": {
@@ -16815,6 +16521,19 @@
       "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
       "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
     },
+    "xxhash-wasm": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/xxhash-wasm/-/xxhash-wasm-1.0.1.tgz",
+      "integrity": "sha512-Lc9CTvDrH2vRoiaUzz25q7lRaviMhz90pkx6YxR9EPYtF99yOJnv2cB+CQ0hp/TLoqrUsk8z/W2EN31T568Azw=="
+    },
+    "xxhashjs": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/xxhashjs/-/xxhashjs-0.2.2.tgz",
+      "integrity": "sha512-AkTuIuVTET12tpsVIQo+ZU6f/qDmKuRUcjaqR+OIvm+aCBsZ95i7UVY5WJ9TMsSaZ0DA2WxoZ4acu0sPH+OKAw==",
+      "requires": {
+        "cuint": "^0.2.2"
+      }
+    },
     "y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/package.json b/package.json
index a6bfb420..d0aad390 100644
--- a/package.json
+++ b/package.json
@@ -12,32 +12,32 @@
     "test:unit": "mocha -r ts-node/register tests/unit/**.spec.ts"
   },
   "dependencies": {
-    "@polkadot/types": "^6.8.1",
-    "@subsquid/cli": "^0.1.5",
+    "@polkadot/types": "^7.14.2",
+    "@subsquid/cli": "^0.2.1",
     "@subsquid/graphql-server": "^0.1.5",
-    "@subsquid/ss58": "^0.0.4",
-    "@subsquid/substrate-processor": "^0.3.0",
-    "@types/signale": "^1.4.2",
-    "axios": "^0.24.0",
-    "class-validator": "^0.13.1",
+    "@subsquid/ss58": "^0.1.0",
+    "@subsquid/substrate-processor": "^0.6.1",
+    "@types/signale": "^1.4.4",
+    "axios": "^0.26.1",
+    "class-validator": "^0.13.2",
     "dotenv": "^16.0.0",
     "inflected": "^2.1.0",
     "md5": "^2.3.0",
-    "nanoid": "^3.1.30",
+    "nanoid": "^3.3.2",
     "signale": "^1.4.0",
     "type-graphql": "^1.2.0-rc.1"
   },
   "devDependencies": {
     "@subsquid/substrate-metadata-explorer": "^0.0.7",
-    "@subsquid/substrate-typegen": "^0.2.3",
+    "@subsquid/substrate-typegen": "^0.4.1",
     "@types/chai": "^4.3.0",
     "@types/inflected": "^1.1.29",
     "@types/md5": "^2.3.2",
-    "@types/mocha": "^9.0.0",
-    "@types/pg": "^8.6.1",
-    "chai": "^4.3.4",
-    "mocha": "^9.1.3",
-    "ts-node": "^10.4.0",
-    "typescript": "~4.4.2"
+    "@types/mocha": "^9.1.0",
+    "@types/pg": "^8.6.5",
+    "chai": "^4.3.6",
+    "mocha": "^9.2.2",
+    "ts-node": "^10.7.0",
+    "typescript": "~4.6.3"
   }
 }
diff --git a/src/mappings/index.ts b/src/mappings/index.ts
index 94ae21e7..d854d80e 100644
--- a/src/mappings/index.ts
+++ b/src/mappings/index.ts
@@ -43,7 +43,7 @@ import md5 from 'md5'
 
 
 export async function handleRemark(context: Context): Promise<void> {
-  const remark = new SystemRemarkCall(context).asLatest.remark
+  const remark = new SystemRemarkCall(context).asV1020.remark
   const records = extractRemark(remark.toString(), context)
   await mainFrame(records, context)
 }
diff --git a/src/types/calls.ts b/src/types/calls.ts
index b4c73e4e..b6a98445 100644
--- a/src/types/calls.ts
+++ b/src/types/calls.ts
@@ -10,7 +10,7 @@ export class SystemRemarkCall {
    *  Make some on-chain remark.
    */
   get isV1020(): boolean {
-    return this.ctx._chain.getCallHash('system.remark') === '92bf52de53c90869d52bdcfb2cda31af9f36f74a1f69a308609cbab49a94ec38'
+    return this.ctx._chain.getCallHash('system.remark') === 'f4e9b5b7572eeae92978087ece9b4f57cb5cab4f16baf5625bb9ec4a432bad63'
   }
 
   /**
diff --git a/src/types/support.ts b/src/types/support.ts
index bc9afc16..a5a1ec6f 100644
--- a/src/types/support.ts
+++ b/src/types/support.ts
@@ -51,3 +51,14 @@ export function deprecateLatest(): void {
         console.warn(`.isLatest, .asLatest properties are deprecated, if you believe this is a mistake, please leave a comment at https://github.com/subsquid/squid/issues/9`)
     }
 }
+
+
+export interface StorageContext {
+    _chain: {
+        getStorageItemTypeHash(prefix: string, name: string): string | undefined
+        getStorage(blockHash: string, prefix: string, name: string, ...args: any[]): Promise<any>
+    }
+    block: {
+        hash: string
+    }
+}