diff --git a/docs/conf.py b/docs/conf.py
index 3d37f70bee..940500e01c 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -35,9 +35,9 @@
 author = "NAWI"
 
 # The full version, including alpha/beta/rc tags
-release = "1.0.dev0"
+release = "1.1.dev0"
 # The short X.Y version
-version = "1.0.dev0"
+version = "1.1.dev0"
 # -- General configuration ---------------------------------------------------
 
 
diff --git a/setup.py b/setup.py
index 7414980172..f20f30290c 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,7 @@
 setup(
     name="watertap",
     url="https://github.com/watertap-org/watertap",
-    version="1.0.dev0",
+    version="1.1.dev0",
     description="WaterTAP modeling library",
     long_description=long_description,
     long_description_content_type="text/markdown",