diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 21aa3779..854114f9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -69,7 +69,7 @@ jobs:
             ~/.cargo/registry/cache/
             ~/.cargo/git/db/
             target/
-          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+          key: ${{ runner.os }}-${{ matrix.target.architecture }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Install Rust i686-pc-windows-msvc target
         run: rustup target add i686-pc-windows-msvc