diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index f0e9c24..3aa2081 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -28,10 +28,10 @@ jobs:
         with:
           submodules: recursive
       - name: Install nightly
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
         id: toolchain
         with:
-          components: "clippy, rustfmt"
+          toolchain: nightly-2024-01-12
       - name: Override default toolchain
         run: rustup override set ${{steps.toolchain.outputs.name}}
       - name: Cache
@@ -51,9 +51,10 @@ jobs:
         with:
           submodules: recursive
       - name: Install nightly
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
         id: toolchain
         with:
+          toolchain: nightly-2024-01-12
           components: "clippy, rustfmt"
       - name: Override default toolchain
         run: rustup override set ${{steps.toolchain.outputs.name}}
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index f0b39bd..b2b599a 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -14,8 +14,10 @@ jobs:
         with:
           submodules: recursive
       - name: Install nightly
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
         id: toolchain
+        with:
+          toolchain: nightly-2024-01-12
       - name: Override default toolchain
         run: rustup override set ${{steps.toolchain.outputs.name}}
       - name: Cache