diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5bbaec46..ae4ed597 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -50,14 +50,14 @@ jobs:
             os: "ubuntu-24.04-arm"
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
           submodules: true
 
       - name: Set up QEMU
         if: "matrix.qemu-arch"
-        uses: docker/setup-qemu-action@v4
+        uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4.0.0
         with:
           platforms: ${{ matrix.qemu-arch }}
 
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 499a51be..e160cd9f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -16,7 +16,7 @@ jobs:
     name: Lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
         with:
           persist-credentials: false
-      - uses: j178/prek-action@v1
+      - uses: j178/prek-action@cbc2f23eb5539cf20d82d1aabd0d0ecbcc56f4e3 # v2.0.2
diff --git a/.github/zizmor.yml b/.github/zizmor.yml
deleted file mode 100644
index 10002656..00000000
--- a/.github/zizmor.yml
+++ /dev/null
@@ -1,6 +0,0 @@
-# https://docs.zizmor.sh/configuration/
-rules:
-  unpinned-uses:
-    config:
-      policies:
-        "*": ref-pin