diff --git a/scripts/update-history.py b/scripts/update-history.py
index c21867147..36579b64e 100755
--- a/scripts/update-history.py
+++ b/scripts/update-history.py
@@ -48,7 +48,19 @@ def main():
     if start_idx == -1:
         raise ValueError("Could not find start of release history")
 
-    relevant_history = history_content[start_idx:]
+    # Find where this version's section ends
+    version_idx = history_content.find(version_header, start_idx)
+    if version_idx == -1:
+        raise ValueError(f"Could not find version header: {version_header}")
+    
+    # Find the next version header after this one
+    next_version_idx = history_content.find("\n### Aider v", version_idx + len(version_header))
+    if next_version_idx == -1:
+        # No next version found, use the rest of the file
+        relevant_history = history_content[start_idx:]
+    else:
+        # Extract just up to the next version
+        relevant_history = history_content[start_idx:next_version_idx]
 
     # Save relevant portions to temporary files
     with tempfile.NamedTemporaryFile(mode="w", delete=False, suffix=".diff") as tmp_diff: