diff --git a/scripts/prep_nightly.py b/scripts/prep_nightly.py
index 5e6a0e1c..8f00cde9 100644
--- a/scripts/prep_nightly.py
+++ b/scripts/prep_nightly.py
@@ -50,7 +50,7 @@ def main(args: str = None) -> None:
         if "CORE_COMMIT" in line:
             print(
                 line.replace(
-                    line, f"CORE_COMMIT = '{last_core_commit['sha']}'".rstrip()
+                    line, f"CORE_COMMIT = \"{last_core_commit['sha']}\"".rstrip()
                 )
             )
         else: