diff --git a/approvaltests/version.py b/approvaltests/version.py
index d20f965..3a98580 100644
--- a/approvaltests/version.py
+++ b/approvaltests/version.py
@@ -1 +1 @@
-version_number = "v11.2.1"
+version_number = "v12.0.0"
diff --git a/version.py b/version.py
index d20f965..3a98580 100644
--- a/version.py
+++ b/version.py
@@ -1 +1 @@
-version_number = "v11.2.1"
+version_number = "v12.0.0"