diff --git a/.gitea/workflows/build-ci.yaml b/.gitea/workflows/build-ci.yaml
index 9db9a3c..ca0dca6 100644
--- a/.gitea/workflows/build-ci.yaml
+++ b/.gitea/workflows/build-ci.yaml
@@ -39,6 +39,22 @@ jobs:
           cd $(go env GOROOT)
           for p in $GITHUB_WORKSPACE/.github/patch/*.patch; do patch --verbose -p 1 < "$p"; done
 
+      - name: Calculate go.sum hash
+        id: calc-hash
+        run: |
+          HASH=$(sha256sum $GITHUB_WORKSPACE/core/src/foss/golang/go.sum | cut -d ' ' -f 1)
+          echo "GOSUM_HASH=$HASH" >> $GITHUB_OUTPUT
+
+      - name: Cache Go modules
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/.cache/go-build
+            ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ steps.calc-hash.outputs.GOSUM_HASH }}
+          restore-keys: |
+            ${{ runner.os }}-go-
+
       - name: Update CA
         run: |
           sudo apt-get update && sudo apt-get install ca-certificates