diff --git a/.github/workflows/build-wasm-internal.yml b/.github/workflows/build-wasm-internal.yml
index e45bcc264..2262babcd 100644
--- a/.github/workflows/build-wasm-internal.yml
+++ b/.github/workflows/build-wasm-internal.yml
@@ -36,7 +36,7 @@ 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 7e01e10e4..e1924ca21 100644
--- a/.github/workflows/build-wasm.yml
+++ b/.github/workflows/build-wasm.yml
@@ -36,7 +36,7 @@ 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