diff --git a/.github/workflows/code-coverage.yml b/.github/workflows/code-coverage.yml
index 5b632391..b6b0bc83 100644
--- a/.github/workflows/code-coverage.yml
+++ b/.github/workflows/code-coverage.yml
@@ -92,6 +92,15 @@ jobs:
           repository: cppalliance/ci-automation
           path: ci-automation
 
+      - name: Patch CI script for extra source directories
+        run: |
+            # The CI script only symlinks 'include/' and 'src/' at boost-root level,
+            # but this repo also has src_zlib/ and src_brotli/. After fix_paths.py
+            # strips 'libs/http/', gcovr can't find these files without symlinks.
+            sed -i '/ln -sfn "\$BOOST_CI_SRC_FOLDER\/src" /a\
+                for _d in "$BOOST_CI_SRC_FOLDER"/src_*; do [ -d "$_d" ] && ln -sfn "$_d" "$(pwd)/$(basename "$_d")" 2>/dev/null || true; done' \
+                ci-automation/scripts/lcov-jenkins-gcc-13.sh
+
       - name: Build and run tests & collect coverage data
         run: |
             set -xe