diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index c60e60a..4d8e394 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -14,4 +14,4 @@ permissions:
 
 jobs:
   rust-ci:
-    uses: hyperpolymath/standards/.github/workflows/rust-ci-reusable.yml@d135b05bfc647d0c0fbfedc7e80f37ea50f49236
+    uses: hyperpolymath/standards/.github/workflows/rust-ci-reusable.yml@7c9db0e5909aab77bf11a444ade3b95c1d2b702e # re-pinned 2026-07-01: toolchain-required-input fix (standards#439)