diff --git a/.github/workflows/build-wasm-internal.yml b/.github/workflows/build-wasm-internal.yml
index 6e0e28b98..9fa430d20 100644
--- a/.github/workflows/build-wasm-internal.yml
+++ b/.github/workflows/build-wasm-internal.yml
@@ -37,7 +37,7 @@ jobs:
       - name: Install rust
         uses: dtolnay/rust-toolchain@7b1c307e0dcbda6122208f10795a713336a9b35a # stable
         with:
-          toolchain: stable
+          toolchain: 1.81.0
           targets: wasm32-unknown-unknown
 
       - name: Cache cargo registry
diff --git a/.github/workflows/build-wasm.yml b/.github/workflows/build-wasm.yml
index f3a57f062..e8d0a8b12 100644
--- a/.github/workflows/build-wasm.yml
+++ b/.github/workflows/build-wasm.yml
@@ -37,7 +37,7 @@ jobs:
       - name: Install rust
         uses: dtolnay/rust-toolchain@7b1c307e0dcbda6122208f10795a713336a9b35a # stable
         with:
-          toolchain: stable
+          toolchain: 1.81.0
           targets: wasm32-unknown-unknown
 
       - name: Cache cargo registry