diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5051e9166..f15f6f9d1 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,6 +17,8 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v4
       - name: Run mock tests
+        env:
+          NO_COLOR: 1
         run: |
           bash test/mock.sh 2>&1 | tee /tmp/mock-output.log
       - name: Post summary
diff --git a/test/mock.sh b/test/mock.sh
index bae2fb15a..d1c3f4d98 100644
--- a/test/mock.sh
+++ b/test/mock.sh
@@ -20,12 +20,16 @@ FIXTURES_DIR="${REPO_ROOT}/test/fixtures"
 TEST_DIR=$(mktemp -d)
 MOCK_LOG="${TEST_DIR}/mock_calls.log"
 
-# Colors
-RED='\033[0;31m'
-GREEN='\033[0;32m'
-YELLOW='\033[1;33m'
-CYAN='\033[0;36m'
-NC='\033[0m'
+# Colors (respect NO_COLOR standard: https://no-color.org/)
+if [[ -n "${NO_COLOR:-}" ]]; then
+    RED='' GREEN='' YELLOW='' CYAN='' NC=''
+else
+    RED='\033[0;31m'
+    GREEN='\033[0;32m'
+    YELLOW='\033[1;33m'
+    CYAN='\033[0;36m'
+    NC='\033[0m'
+fi
 
 # Counters
 PASSED=0