diff --git a/script/update-known-failures.sh b/script/update-known-failures.sh
new file mode 100755
index 0000000..70f6591
--- /dev/null
+++ b/script/update-known-failures.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+tree-sitter parse $(find examples/bash-it -name '*.bash' -or -name '*.sh') -q -t \
+  | egrep 'ERROR|undefined' \
+  | cut -d' ' -f1 \
+  > script/known-failures.txt