diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b0bc0a8..dcba8a69 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,10 @@ and this project adheres to [Semantic Versioning][semver].
 
 ### Fixed
 
+- Fix change_notifications type (pydantic bug) ([#158])
+
+[#158]: https://github.com/openlawlibrary/pygls/pull/158
+
 ## [0.10.1] - 03/17/2021
 
 ### Fixed
diff --git a/pygls/lsp/types/workspace.py b/pygls/lsp/types/workspace.py
index 0ea49fa4..b3d15933 100644
--- a/pygls/lsp/types/workspace.py
+++ b/pygls/lsp/types/workspace.py
@@ -37,7 +37,7 @@
 
 class WorkspaceFoldersServerCapabilities(Model):
     supported: Optional[bool] = False
-    change_notifications: Optional[Union[str, bool]] = None
+    change_notifications: Optional[Union[bool, str]] = None
 
 
 class WorkspaceFolder(Model):