diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index 7d4f9274..79d20755 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,9 +1,5 @@
 # Frequenz Dispatch Client Library Release Notes
 
-## Summary
-
-* The dispatch-cli application now features fancy colors and formatting!
-
 ## Bug Fixes
 
-* Fixed a bug where the dispatch-cli application would crash when reading a Dispatch with frequency YEARLY
+* Fix missing dependency in last release
diff --git a/pyproject.toml b/pyproject.toml
index ff0da73b..0c48cca2 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -41,6 +41,7 @@ dependencies = [
   "frequenz-client-base >= 0.8.0, < 0.9.0",
   "frequenz-client-common >= 0.1.0, < 0.3.0",
   "grpcio >= 1.66.1, < 2",
+  "python-dateutil >= 2.8.2, < 3.0",
 ]
 dynamic = ["version"]