diff --git a/.github/workflows/lein-test.yaml b/.github/workflows/lein-test.yaml
index 24882118..8600a789 100644
--- a/.github/workflows/lein-test.yaml
+++ b/.github/workflows/lein-test.yaml
@@ -23,14 +23,14 @@ jobs:
           - '17'
     steps:
       - name: Check out repository code
-        uses: actions/checkout@v7
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
       - name: Setup java
-        uses: actions/setup-java@v5
+        uses: actions/setup-java@1bcf9fb12cf4aa7d266a90ae39939e61372fe520 # v5.4.0
         with:
           distribution: temurin
           java-version: ${{ matrix.java }}
       - name: Install Clojure tools
-        uses: DeLaGuardo/setup-clojure@13.5
+        uses: DeLaGuardo/setup-clojure@4c7a6f613e5089821bb3bb2a33a3ee115578580d # 13.6.1
         with:
           cli: latest              # Clojure CLI based on tools.deps
           lein: latest                  # Leiningen
@@ -55,6 +55,6 @@ jobs:
     name: Test suite
     steps:
       - name: Decide whether the needed jobs succeeded or failed
-        uses: re-actors/alls-green@release/v1
+        uses: re-actors/alls-green@05ac9388f0aebcb5727afa17fcccfecd6f8ec5fe # v1.2.2
         with:
           jobs: ${{ toJSON(needs) }}