diff --git a/setup.cfg b/setup.cfg
index 89b5d30e..3fefd1f0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,5 +1,5 @@
 [bumpversion]
-current_version = 0.21.1
+current_version = 1.0.0
 commit = True
 tag = True
 
diff --git a/src/dotenv/version.py b/src/dotenv/version.py
index 76f24586..5becc17c 100644
--- a/src/dotenv/version.py
+++ b/src/dotenv/version.py
@@ -1 +1 @@
-__version__ = "0.21.1"
+__version__ = "1.0.0"