diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 744e74d..95e2876 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -22,7 +22,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: "Install/Update the Rust version"
-        uses: actions-rust-lang/setup-rust-toolchain@v1
+        uses: actions-rust-lang/setup-rust-toolchain@v1.15.4
         with:
           toolchain: ${{ matrix.rust }}
           components: clippy
@@ -44,7 +44,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: "Install/Update the Rust version"
-        uses: actions-rust-lang/setup-rust-toolchain@v1
+        uses: actions-rust-lang/setup-rust-toolchain@v1.15.4
         with:
           components: rustfmt
 
@@ -63,7 +63,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: "Install/Update the Rust version"
-        uses: actions-rust-lang/setup-rust-toolchain@v1
+        uses: actions-rust-lang/setup-rust-toolchain@v1.15.4
         with:
           toolchain: ${{ matrix.rust }}
 
diff --git a/.github/workflows/publish-crates-io.yaml b/.github/workflows/publish-crates-io.yaml
index 1e80a44..48f4b31 100644
--- a/.github/workflows/publish-crates-io.yaml
+++ b/.github/workflows/publish-crates-io.yaml
@@ -12,7 +12,7 @@ jobs:
     steps:
       - uses: actions/checkout@v6
       - name: "Install/Update the Rust version"
-        uses: actions-rust-lang/setup-rust-toolchain@v1
+        uses: actions-rust-lang/setup-rust-toolchain@v1.15.4
       - run: cargo login ${CRATES_IO_TOKEN}
         env:
           CRATES_IO_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}