diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 6051964..1b231a1 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -20,7 +20,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: wasm-pack-action
-      uses: jetli/wasm-pack-action@v0.3.0
+      uses: jetli/wasm-pack-action@f98777369a49686b132a9e8f0fdd59837bf3c3fd # v0.3.0
       with:
         version: "v0.9.1"
     - name: Run tests in headless Firefox