diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 0b525a08ce..4e6c2aa746 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -61,7 +61,7 @@ jobs:
         run: pipx run build --sdist awkward-cpp
 
       - name: Check sdist matches PyPI
-        run: pipx run nox -s check_cpp_sdist_released -- awkward-cpp/dist/awkward-cpp*.tar.gz
+        run: pipx run nox -s check_cpp_sdist_released -- awkward-cpp/dist/awkward_cpp*.tar.gz
 
   build:
     name: "Build wheel & sdist"
diff --git a/.github/workflows/needs-cpp-release.yml b/.github/workflows/needs-cpp-release.yml
index 6cee481b71..7482813941 100644
--- a/.github/workflows/needs-cpp-release.yml
+++ b/.github/workflows/needs-cpp-release.yml
@@ -46,4 +46,4 @@ jobs:
         run: pipx run build --sdist awkward-cpp
 
       - name: Check sdist matches PyPI
-        run: pipx run nox -s check_cpp_sdist_released -- awkward-cpp/dist/awkward-cpp*.tar.gz
+        run: pipx run nox -s check_cpp_sdist_released -- awkward-cpp/dist/awkward_cpp*.tar.gz