diff --git a/.github/workflows/cI.yml b/.github/workflows/cI.yml
index 1d84fe6..4bb8381 100644
--- a/.github/workflows/cI.yml
+++ b/.github/workflows/cI.yml
@@ -18,6 +18,9 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
       - name: Install nightly toolchain
         uses: dtolnay/rust-toolchain@nightly
             components: clippy
@@ -32,6 +35,9 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
       - name: Install nightly toolchain
         uses: dtolnay/rust-toolchain@nightly
             components: rustfmt
@@ -41,8 +47,12 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+
       - name: Install nightly toolchain
         uses: dtolnay/rust-toolchain@nightly
+
       - uses: Swatinem/rust-cache@v2
         with:
             cache-on-failure: true