diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index ba39d6c..00e303c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
 
     strategy:
       matrix:
-        go-version: [1.15, 1.16]
+        go-version: [1.17, 1.18]
         pg-version: [9.6, 10, 11, 12, 13, cockroachdb]
         include:
           - pg-version: 9.6
diff --git a/go.mod b/go.mod
index fb6e4c8..c1060bb 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/jackc/pgconn
 
-go 1.12
+go 1.17
 
 require (
 	github.com/jackc/chunkreader/v2 v2.0.1
@@ -13,3 +13,9 @@ require (
 	golang.org/x/crypto v0.20.0
 	golang.org/x/text v0.14.0
 )
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)