diff --git a/.github/workflows/toolchain.yml b/.github/workflows/toolchain.yml
index abbd4c5..ff26655 100644
--- a/.github/workflows/toolchain.yml
+++ b/.github/workflows/toolchain.yml
@@ -33,7 +33,7 @@ jobs:
       # the mise release pinned here moves only when a maintainer moves it — and
       # it is the binary that computes the report below, which makes it the one
       # pin whose drift the report cannot surface.
-      - uses: jdx/mise-action@c2a87611a18de5b3828c5652fe268e992400cb5c # v4.3.0
+      - uses: jdx/mise-action@fc42bcc7ddbf51124c30f95a877a0c5168a3bfde # v5.2.1
         with:
           version: 2026.9.1
           # Report on the pinned versions; do not install them.