diff --git a/nbclassic/__version__.py b/nbclassic/__version__.py
index 52c69476c..d7b30e121 100644
--- a/nbclassic/__version__.py
+++ b/nbclassic/__version__.py
@@ -1 +1 @@
-__version__ = "0.4.0.dev0"
+__version__ = "0.3.6"
diff --git a/pyproject.toml b/pyproject.toml
index d289dfbb0..746588a0c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -16,7 +16,7 @@ testpaths = [
 skip = ["check-links"]
 
 [tool.tbump.version]
-current = "0.4.0.dev0"
+current = "0.3.6"
 regex = '''
   (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)
   ((?P<channel>a|b|rc|.dev)(?P<release>\d+))?