diff --git a/.github/workflows/CICD.yml b/.github/workflows/CICD.yml
index e4d74a690..215232a87 100644
--- a/.github/workflows/CICD.yml
+++ b/.github/workflows/CICD.yml
@@ -844,13 +844,13 @@ jobs:
         ## Generate coverage data
         COVERAGE_REPORT_DIR="target/debug"
         COVERAGE_REPORT_FILE="${COVERAGE_REPORT_DIR}/lcov.info"
-        # GRCOV_IGNORE_OPTION='--ignore build.rs --ignore "/*" --ignore "[a-zA-Z]:/*"' ## `grcov` ignores these params when passed as an environment variable (why?)
+        # GRCOV_IGNORE_OPTION='--ignore build.rs --ignore "vendor/*" --ignore "/*" --ignore "[a-zA-Z]:/*"' ## `grcov` ignores these params when passed as an environment variable (why?)
         # GRCOV_EXCLUDE_OPTION='--excl-br-line "^\s*((debug_)?assert(_eq|_ne)?!|#\[derive\()"' ## `grcov` ignores these params when passed as an environment variable (why?)
         mkdir -p "${COVERAGE_REPORT_DIR}"
         # display coverage files
-        grcov . --output-type files --ignore build.rs --ignore "/*" --ignore "[a-zA-Z]:/*" --excl-br-line "^\s*((debug_)?assert(_eq|_ne)?!|#\[derive\()" | sort --unique
+        grcov . --output-type files --ignore build.rs --ignore "vendor/*" --ignore "/*" --ignore "[a-zA-Z]:/*" --excl-br-line "^\s*((debug_)?assert(_eq|_ne)?!|#\[derive\()" | sort --unique
         # generate coverage report
-        grcov . --output-type lcov --output-path "${COVERAGE_REPORT_FILE}" --branch --ignore build.rs --ignore "/*" --ignore "[a-zA-Z]:/*" --excl-br-line "^\s*((debug_)?assert(_eq|_ne)?!|#\[derive\()"
+        grcov . --output-type lcov --output-path "${COVERAGE_REPORT_FILE}" --branch --ignore build.rs --ignore "vendor/*" --ignore "/*" --ignore "[a-zA-Z]:/*" --excl-br-line "^\s*((debug_)?assert(_eq|_ne)?!|#\[derive\()"
         echo ::set-output name=report::${COVERAGE_REPORT_FILE}
     - name: Upload coverage results (to Codecov.io)
       uses: codecov/codecov-action@v1