diff --git a/.gitea/workflows/ci.yaml b/.gitea/workflows/ci.yaml
index 626ef74..847c332 100644
--- a/.gitea/workflows/ci.yaml
+++ b/.gitea/workflows/ci.yaml
@@ -18,6 +18,6 @@ jobs:
     steps:
       - uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6
       - name: Validate "${{ matrix.json-file }}"
-        uses: https://gitea.t000-n.de/t.behrendt/validate-json-by-json-schema-action@0.1.2
+        uses: https://gitea.t000-n.de/t.behrendt/validate-json-by-json-schema-action@3e6f6900956d410f67923617c65f38a7efb228c6 # 0.1.2
         with:
           json-file: "./${{ matrix.json-file }}"