diff --git a/d3rlpy/_version.py b/d3rlpy/_version.py
index 6849410a..a82b376d 100644
--- a/d3rlpy/_version.py
+++ b/d3rlpy/_version.py
@@ -1 +1 @@
-__version__ = "1.1.0"
+__version__ = "1.1.1"