diff --git a/PackageReleaseNotes.txt b/PackageReleaseNotes.txt
index ff302d3..46438b9 100644
--- a/PackageReleaseNotes.txt
+++ b/PackageReleaseNotes.txt
@@ -1,4 +1,4 @@
-# 0.0.20 (08 May 2022)
-- #35 The new() constraint must be the last constraint specified [bug]
+# 0.0.21 (08 May 2022)
+- #36 If the parameter is defined as Nullable, always return "null" as default value. [enhancement]
 
 The full release notes can be found here: https://github.com/StefH/ProxyInterfaceSourceGenerator/blob/main/ReleaseNotes.md
\ No newline at end of file
diff --git a/ReleaseNotes.md b/ReleaseNotes.md
index e59faa1..79030f3 100644
--- a/ReleaseNotes.md
+++ b/ReleaseNotes.md
@@ -1,3 +1,6 @@
+# 0.0.21 (08 May 2022)
+- [#36](https://github.com/StefH/ProxyInterfaceSourceGenerator/pull/36) - If the parameter is defined as Nullable, always return "null" as default value. [enhancement] contributed by [StefH](https://github.com/StefH)
+
 # 0.0.20 (08 May 2022)
 - [#35](https://github.com/StefH/ProxyInterfaceSourceGenerator/pull/35) - The new() constraint must be the last constraint specified [bug] contributed by [StefH](https://github.com/StefH)