diff --git a/.github/workflows/codeql-cpp.yaml b/.github/workflows/codeql-cpp.yaml
index f699c8aed..7485f8aa1 100644
--- a/.github/workflows/codeql-cpp.yaml
+++ b/.github/workflows/codeql-cpp.yaml
@@ -51,7 +51,6 @@ jobs:
         with:
           path: ${{ env.CPM_SOURCE_CACHE }}
           key: cpm-${{ hashFiles('cpp/cmake/dependencies.cpm.cmake') }}
-          restore-keys: cpm-
 
       - name: Cache ccache
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
diff --git a/.github/workflows/test-cpp.yml b/.github/workflows/test-cpp.yml
index 6aff52a59..dfd104ffa 100644
--- a/.github/workflows/test-cpp.yml
+++ b/.github/workflows/test-cpp.yml
@@ -75,7 +75,6 @@ jobs:
         with:
           path: ${{ env.CPM_SOURCE_CACHE }}
           key: cpm-${{ hashFiles('cpp/cmake/dependencies.cpm.cmake') }}
-          restore-keys: cpm-
 
       - name: Cache ccache
         if: "!startsWith(matrix.config.os, 'windows')"