diff --git a/aider/__init__.py b/aider/__init__.py
index 23925b316..17a7ae828 100644
--- a/aider/__init__.py
+++ b/aider/__init__.py
@@ -1,6 +1,6 @@
 try:
     from aider.__version__ import __version__
 except Exception:
-    __version__ = "0.63.3.dev"
+    __version__ = "0.64.0"
 
 __all__ = [__version__]
diff --git a/scripts/versionbump.py b/scripts/versionbump.py
index 8e9a4dacb..a53d6441f 100755
--- a/scripts/versionbump.py
+++ b/scripts/versionbump.py
@@ -127,7 +127,7 @@ def main():
             subprocess.run(
                 cmd,
                 text=True,
-                shell=True,
+                # shell=True,
                 encoding="utf-8",
                 errors="replace",
                 check=True,