diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index ce703625..8a3ed9c8 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -15,7 +15,7 @@ jobs:
       - name: Install latest nightly
         uses: actions-rs/toolchain@v1
         with:
-            toolchain: nightly
+            toolchain: nightly-2022-12-04
             override: true
             components: rustfmt, clippy
             target: wasm32-unknown-unknown
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index f8739227..6f231024 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -18,7 +18,7 @@ jobs:
       - name: Install stable toolchain
         uses: actions-rs/toolchain@v1
         with:
-          toolchain: nightly-2023-03-15
+          toolchain: nightly-2022-12-04
           target: wasm32-unknown-unknown
           override: true
           default: true