Release 1.21.0
diff --git a/frontend/package.json b/frontend/package.json
index 45bf6d32083d..9acf4e2e7258 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,6 +1,6 @@
 {
   "name": "streamlit-browser",
-  "version": "1.20.0",
+  "version": "1.21.0",
   "private": true,
   "homepage": "./",
   "scripts": {
diff --git a/lib/setup.py b/lib/setup.py
index eec4beb66d5f..a95a255ac8a0 100644
--- a/lib/setup.py
+++ b/lib/setup.py
@@ -21,7 +21,7 @@
 
 THIS_DIRECTORY = Path(__file__).parent
 
-VERSION = "1.20.0"  # PEP-440
+VERSION = "1.21.0"  # PEP-440
 
 NAME = "streamlit"
 
