diff --git a/.github/workflows/golangci-lint.yml b/.github/workflows/golangci-lint.yml
index cae5662f..a108eb7d 100644
--- a/.github/workflows/golangci-lint.yml
+++ b/.github/workflows/golangci-lint.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: "1.21.1"
+          go-version: "1.20.7"
       - uses: actions/checkout@v2
         with:
           fetch-depth: '0'
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index f6feac5f..a9f9bea9 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,7 +20,7 @@ jobs:
       - name: Install Go
         uses: actions/setup-go@v3
         with:
-          go-version: "1.21.1"
+          go-version: "1.20.7"
 
       - name: Retrieve version
         run: |
diff --git a/.github/workflows/test-all.yml b/.github/workflows/test-all.yml
index 6dbb81b3..e5047238 100644
--- a/.github/workflows/test-all.yml
+++ b/.github/workflows/test-all.yml
@@ -13,7 +13,7 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v3
       with:
-        go-version: "1.21.1"
+        go-version: "1.20.7"
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
       with:
diff --git a/.github/workflows/test-windows.yml b/.github/workflows/test-windows.yml
index bb53478d..25aa8b5a 100644
--- a/.github/workflows/test-windows.yml
+++ b/.github/workflows/test-windows.yml
@@ -13,7 +13,7 @@ jobs:
     - name: Install Go
       uses: actions/setup-go@v3
       with:
-        go-version: "1.21.1"
+        go-version: "1.20.7"
     - name: Check out code into the Go module directory
       uses: actions/checkout@v2
     - name: Run Tests
diff --git a/.github/workflows/trivy-scan.yml b/.github/workflows/trivy-scan.yml
index b5d55741..1d76d5cd 100644
--- a/.github/workflows/trivy-scan.yml
+++ b/.github/workflows/trivy-scan.yml
@@ -10,7 +10,7 @@ jobs:
     with:
       repo: carvel-dev/ytt
       tool: ytt
-      goVersion: "1.21.1"
+      goVersion: "1.20.7"
     secrets:
       githubToken: ${{ secrets.GITHUB_TOKEN }}
       slackWebhookURL: ${{ secrets.SLACK_WEBHOOK_URL }}
diff --git a/go.mod b/go.mod
index 89f4340c..884f37bb 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/vmware-tanzu/carvel-ytt
 
-go 1.21
+go 1.20
 
 require (
 	github.com/BurntSushi/toml v1.2.1