diff --git a/examples/gpt-5/gpt5-1_prompting_guide.ipynb b/examples/gpt-5/gpt-5-1_prompting_guide.ipynb
similarity index 100%
rename from examples/gpt-5/gpt5-1_prompting_guide.ipynb
rename to examples/gpt-5/gpt-5-1_prompting_guide.ipynb
diff --git a/registry.yaml b/registry.yaml
index 9d2e391e5e..645bb0ae6a 100644
--- a/registry.yaml
+++ b/registry.yaml
@@ -2636,7 +2636,7 @@
     - codex
 
 - title: GPT-5.1 Prompting Guide
-  path: examples/gpt-5/gpt5-1_prompting_guide.ipynb
+  path: examples/gpt-5/gpt-5-1_prompting_guide.ipynb
   date: 2025-11-13
   authors:
     - samarth-oai