diff --git a/test/functional/test_runner.py b/test/functional/test_runner.py
index bcedc0c9af..6ad27a0868 100755
--- a/test/functional/test_runner.py
+++ b/test/functional/test_runner.py
@@ -69,11 +69,14 @@ if os.name != 'nt' or sys.getwindowsversion() >= (10, 0, 14393): #type:ignore
 TEST_EXIT_PASSED = 0
 TEST_EXIT_SKIPPED = 77
 
+# List of framework modules containing unit tests. Should be kept in sync with
+# the output of `git grep unittest.TestCase ./test/functional/test_framework`
 TEST_FRAMEWORK_MODULES = [
     "address",
     "blocktools",
     "muhash",
     "key",
+    "ripemd160",
     "script",
     "segwit_addr",
     "util",