diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index efa4991b..44cb57f0 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -24,6 +24,7 @@ name: rust-ci
 
 env:
   RUST_MSRV: &RUST_MSRV "1.63"
+  CBINDGEN_VERSION: "0.29.2"
 
 jobs:
   codespell:
@@ -132,7 +133,7 @@ jobs:
         with:
           components: rustfmt,clippy
       - name: install cbindgen
-        run: cargo install --force cbindgen
+        run: cargo install --force --locked cbindgen@${{ env.CBINDGEN_VERSION }}
       - name: make lint
         run: make CARGO_NIGHTLY=cargo lint
 
@@ -142,7 +143,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: dtolnay/rust-toolchain@stable
       - name: install cbindgen
-        run: cargo install --force cbindgen
+        run: cargo install --force --locked cbindgen@${{ env.CBINDGEN_VERSION }}
       - run: make validate-cbindgen
 
   validate-elf-symbols: