diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d59fd08..d60338f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -88,7 +88,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.77"  # STABLE
+        toolchain: "1.78"  # STABLE
     - uses: Swatinem/rust-cache@v2
     - name: Check documentation
       env:
@@ -103,7 +103,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.77"  # STABLE
+        toolchain: "1.78"  # STABLE
         components: rustfmt
     - uses: Swatinem/rust-cache@v2
     - name: Check formatting
@@ -119,7 +119,7 @@ jobs:
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
       with:
-        toolchain: "1.77"  # STABLE
+        toolchain: "1.78"  # STABLE
         components: clippy
     - uses: Swatinem/rust-cache@v2
     - name: Install SARIF tools