diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1af134c..03b6bfb 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,9 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install nightly toolchain
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: nightly-2024-02-01
 
       - name: Set up rust cache
         uses: Swatinem/rust-cache@v2
@@ -69,8 +71,9 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install nightly toolchain
-        uses: dtolnay/rust-toolchain@nightly
+        uses: dtolnay/rust-toolchain@master
         with:
+          toolchain: nightly-2024-02-01
           components: rustfmt, clippy
 
       - name: Set up rust cache
diff --git a/rust-toolchain.toml b/rust-toolchain.toml
index 5d56faf..78c155a 100644
--- a/rust-toolchain.toml
+++ b/rust-toolchain.toml
@@ -1,2 +1,2 @@
 [toolchain]
-channel = "nightly"
+channel = "nightly-2024-02-01"