diff --git a/conformance-tests/2023-09/EXPR/job_templates/expr2.2.5--re-backslash-upper-Z.invalid.yaml b/conformance-tests/2023-09/EXPR/job_templates/expr2.2.5--re-backslash-upper-Z.invalid.yaml
index 92d1159..0fd8061 100644
--- a/conformance-tests/2023-09/EXPR/job_templates/expr2.2.5--re-backslash-upper-Z.invalid.yaml
+++ b/conformance-tests/2023-09/EXPR/job_templates/expr2.2.5--re-backslash-upper-Z.invalid.yaml
@@ -10,4 +10,4 @@ steps:
         command: python
         args:
         - -c
-        - print(r'{{ re_search("hello", r"llo\z") }}')
+        - print(r'{{ re_search("hello", r"llo\\Z") }}')