diff --git a/README.md b/README.md
index 894d2ac4..509aade5 100644
--- a/README.md
+++ b/README.md
@@ -21,6 +21,9 @@ SERL provides a set of libraries, env wrappers, and examples to train RL policie
   - [Contribution](#contribution)
   - [Citation](#citation)
 
+## Major bug fix
+We fixed a major issue in the intervention action frame. See release [v0.1.1](https://github.com/rail-berkeley/serl/releases/tag/v0.1.1) Please update your code with the main branch.
+
 ## Installation
 1. **Setup Conda Environment:**
     create an environment with