diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 47b9b32..869982d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Set up OCaml
-        uses: ocaml/setup-ocaml@4c1df9105efb7a8b996c21e052e4fb8b64a8f2fc # v3
+        uses: ocaml/setup-ocaml@dec6499fef64fc5d7ed43d43a87251b7b1c306f5 # v3
         with:
           ocaml-compiler: "5.1"
 
@@ -43,7 +43,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Set up OCaml
-        uses: ocaml/setup-ocaml@4c1df9105efb7a8b996c21e052e4fb8b64a8f2fc # v3
+        uses: ocaml/setup-ocaml@dec6499fef64fc5d7ed43d43a87251b7b1c306f5 # v3
         with:
           ocaml-compiler: "5.1"
 
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 5f43fef..ef03b28 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -18,7 +18,7 @@ jobs:
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
 
       - name: Set up OCaml
-        uses: ocaml/setup-ocaml@4c1df9105efb7a8b996c21e052e4fb8b64a8f2fc # v3
+        uses: ocaml/setup-ocaml@dec6499fef64fc5d7ed43d43a87251b7b1c306f5 # v3
         with:
           ocaml-compiler: "5.1"