diff --git a/.github/actions/calcrom/action.yml b/.github/actions/calcrom/action.yml
index 601b9f585f..181f6e5a30 100644
--- a/.github/actions/calcrom/action.yml
+++ b/.github/actions/calcrom/action.yml
@@ -38,6 +38,8 @@ runs:
         ref: 8bf8bb71d448156d7e535612e4072a36f70568a2 # v0.1.0
         path: calcrom
     - uses: actions-rust-lang/setup-rust-toolchain@166cdcfd11aee3cb47222f9ddb555ce30ddb9659 # v1.17.0
+      with:
+        rust-src-dir: calcrom
     - shell: /bin/bash
       run: |
         {