diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b0c57633..6f8fe2c0 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        go-version: ["1.19", "1.20"]
+        go-version: ["1.20", "1.21"]
         pg-version: [11, 12, 13, 14, 15, cockroachdb]
         include:
           - pg-version: 11
@@ -74,7 +74,7 @@ jobs:
 
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Go ${{ matrix.go-version }}
         uses: actions/setup-go@v4
@@ -127,7 +127,7 @@ jobs:
     runs-on: windows-latest
     strategy:
       matrix:
-        go-version: ["1.19", "1.20"]
+        go-version: ["1.20", "1.21"]
 
     steps:
       - name: Setup PostgreSQL
@@ -137,7 +137,7 @@ jobs:
           database: pgx_test
 
       - name: Check out code into the Go module directory
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Go ${{ matrix.go-version }}
         uses: actions/setup-go@v4
diff --git a/README.md b/README.md
index 522206f9..621830a3 100644
--- a/README.md
+++ b/README.md
@@ -88,7 +88,7 @@ See CONTRIBUTING.md for setup instructions.
 
 ## Supported Go and PostgreSQL Versions
 
-pgx supports the same versions of Go and PostgreSQL that are supported by their respective teams. For [Go](https://golang.org/doc/devel/release.html#policy) that is the two most recent major releases and for [PostgreSQL](https://www.postgresql.org/support/versioning/) the major releases in the last 5 years. This means pgx supports Go 1.19 and higher and PostgreSQL 11 and higher. pgx also is tested against the latest version of [CockroachDB](https://www.cockroachlabs.com/product/).
+pgx supports the same versions of Go and PostgreSQL that are supported by their respective teams. For [Go](https://golang.org/doc/devel/release.html#policy) that is the two most recent major releases and for [PostgreSQL](https://www.postgresql.org/support/versioning/) the major releases in the last 5 years. This means pgx supports Go 1.20 and higher and PostgreSQL 11 and higher. pgx also is tested against the latest version of [CockroachDB](https://www.cockroachlabs.com/product/).
 
 ## Version Policy