diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 80ca1d3e..4e049fe5 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Install Rust Stable toolchain
         uses: actions-rs/toolchain@v1
@@ -58,7 +58,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Sources
-        uses: actions/checkout@v2
+        uses: actions/checkout@v2.3.4
 
       - name: Install Rust Stable Toolchain
         uses: actions-rs/toolchain@v1