diff --git a/CHANGES.rst b/CHANGES.rst
index 0419003..72b7a4e 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -7,6 +7,7 @@ Changelog
 Minor changes:
 
 - Add funding information
+- Update windows to olson conversion for Greenland Standard Time
 
 Breaking changes:
 
diff --git a/src/icalendar/windows_to_olson.py b/src/icalendar/windows_to_olson.py
index 383ec7c..0633177 100644
--- a/src/icalendar/windows_to_olson.py
+++ b/src/icalendar/windows_to_olson.py
@@ -51,7 +51,7 @@ WINDOWS_TO_OLSON = {
     'GMT Standard Time': 'Europe/London',
     'GTB Standard Time': 'Europe/Bucharest',
     'Georgian Standard Time': 'Asia/Tbilisi',
-    'Greenland Standard Time': 'America/Godthab',
+    'Greenland Standard Time': 'America/Nuuk',
     'Greenwich Standard Time': 'Atlantic/Reykjavik',
     'Hawaiian Standard Time': 'Pacific/Honolulu',
     'India Standard Time': 'Asia/Kolkata',