diff --git a/.github/workflows/autotest.yml b/.github/workflows/autotest.yml
index 5e8b0fb..be17f37 100644
--- a/.github/workflows/autotest.yml
+++ b/.github/workflows/autotest.yml
@@ -89,7 +89,7 @@ jobs:
         goos: [linux]
         goarch: [amd64]
         # "" means default
-        goversion: ["", "1.19", "1.19.7", "https://go.dev/dl/go1.19.7.linux-amd64.tar.gz"]
+        goversion: ["", "1.21", "1.21.1", "https://go.dev/dl/go1.21.6.linux-amd64.tar.gz"]
     steps:
     # - name: Wait release docker build for release branches
     #  if: contains(github.ref, 'release')
diff --git a/setup-go.sh b/setup-go.sh
index b0d0b3e..f7552b6 100755
--- a/setup-go.sh
+++ b/setup-go.sh
@@ -7,7 +7,7 @@ GO_LINUX_PACKAGE_URL="https://go.dev/dl/$(curl https://go.dev/VERSION?m=text | h
 if [[ "${INPUT_GOVERSION##*/}" == "go.mod" ]]; then
     INPUT_GOVERSION=$(grep -e '^go' -m 1 ${INPUT_GOVERSION} | sed -e 's/go //g')
 fi
-if [[ ${INPUT_GOVERSION} =~ "^1\.[0-9]+" ]]; then
+if [[ ${INPUT_GOVERSION} =~ ^1\.[0-9]+$ ]]; then
     LATEST_MINOR_GOVERSION=$(curl -s https://go.dev/dl/ | grep -oP "go${INPUT_GOVERSION}\.\d+" | head -n 1 | cut -c 3-)
     GO_LINUX_PACKAGE_URL="https://go.dev/dl/go${LATEST_MINOR_GOVERSION}.linux-${ARCH}.tar.gz"
 elif [[ ${INPUT_GOVERSION} == http* ]]; then