diff --git a/Cargo.lock b/Cargo.lock
index 0bdb0eb8881..9f99243089b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -630,7 +630,7 @@ dependencies = [
 
 [[package]]
 name = "beacon_node"
-version = "1.3.0"
+version = "1.4.0-rc.0"
 dependencies = [
  "beacon_chain",
  "clap",
@@ -844,7 +844,7 @@ dependencies = [
 
 [[package]]
 name = "boot_node"
-version = "1.3.0"
+version = "1.4.0-rc.0"
 dependencies = [
  "beacon_node",
  "clap",
@@ -1300,9 +1300,9 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-epoch"
-version = "0.9.4"
+version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "52fb27eab85b17fbb9f6fd667089e07d6a2eb8743d02639ee7f6a7a7729c9c94"
+checksum = "4ec02e091aa634e2c3ada4a392989e7c3116673ef0ac5b72232439094d73b7fd"
 dependencies = [
  "cfg-if 1.0.0",
  "crossbeam-utils",
@@ -1313,11 +1313,10 @@ dependencies = [
 
 [[package]]
 name = "crossbeam-utils"
-version = "0.8.4"
+version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4feb231f0d4d6af81aed15928e58ecf5816aa62a2393e2c82f46973e92a9a278"
+checksum = "d82cfc11ce7f2c3faef78d8a684447b40d503d9681acebed6cb728d45940c4db"
 dependencies = [
- "autocfg 1.0.1",
  "cfg-if 1.0.0",
  "lazy_static",
 ]
@@ -3353,7 +3352,7 @@ dependencies = [
 
 [[package]]
 name = "lcli"
-version = "1.3.0"
+version = "1.4.0-rc.0"
 dependencies = [
  "account_utils",
  "bls",
@@ -3730,7 +3729,7 @@ dependencies = [
 
 [[package]]
 name = "lighthouse"
-version = "1.3.0"
+version = "1.4.0-rc.0"
 dependencies = [
  "account_manager",
  "account_utils",
diff --git a/beacon_node/Cargo.toml b/beacon_node/Cargo.toml
index 4cfede51001..73d18a2c9aa 100644
--- a/beacon_node/Cargo.toml
+++ b/beacon_node/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "beacon_node"
-version = "1.3.0"
+version = "1.4.0-rc.0"
 authors = ["Paul Hauner <paul@paulhauner.com>", "Age Manning <Age@AgeManning.com"]
 edition = "2018"
 
diff --git a/boot_node/Cargo.toml b/boot_node/Cargo.toml
index 063687584f7..9e7072c0e4f 100644
--- a/boot_node/Cargo.toml
+++ b/boot_node/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "boot_node"
-version = "1.3.0"
+version = "1.4.0-rc.0"
 authors = ["Sigma Prime <contact@sigmaprime.io>"]
 edition = "2018"
 
diff --git a/common/lighthouse_version/src/lib.rs b/common/lighthouse_version/src/lib.rs
index 5fa8fbe5a8f..1b9c2b654da 100644
--- a/common/lighthouse_version/src/lib.rs
+++ b/common/lighthouse_version/src/lib.rs
@@ -16,7 +16,7 @@ pub const VERSION: &str = git_version!(
         // NOTE: using --match instead of --exclude for compatibility with old Git
         "--match=thiswillnevermatchlol"
     ],
-    prefix = "Lighthouse/v1.3.0-",
+    prefix = "Lighthouse/v1.4.0-rc.0-",
     fallback = "unknown"
 );
 
diff --git a/lcli/Cargo.toml b/lcli/Cargo.toml
index bc9c69c8b7d..76e2b837cf4 100644
--- a/lcli/Cargo.toml
+++ b/lcli/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "lcli"
 description = "Lighthouse CLI (modeled after zcli)"
-version = "1.3.0"
+version = "1.4.0-rc.0"
 authors = ["Paul Hauner <paul@paulhauner.com>"]
 edition = "2018"
 
diff --git a/lighthouse/Cargo.toml b/lighthouse/Cargo.toml
index 60009400aa3..d80e977735e 100644
--- a/lighthouse/Cargo.toml
+++ b/lighthouse/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "lighthouse"
-version = "1.3.0"
+version = "1.4.0-rc.0"
 authors = ["Sigma Prime <contact@sigmaprime.io>"]
 edition = "2018"
 autotests = false