diff --git a/CITATION.cff b/CITATION.cff
index 61bcc3a..6ba459e 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -7,5 +7,5 @@ authors:
 title: "The quaternionic package"
 license: MIT
 doi: 10.5281/zenodo.4097227
-version: 1.0.8
-date-released: 2023-11-28
+version: 1.0.9
+date-released: 2024-03-11
diff --git a/quaternionic/__version__.py b/quaternionic/__version__.py
index e13bd59..39e0411 100644
--- a/quaternionic/__version__.py
+++ b/quaternionic/__version__.py
@@ -1 +1 @@
-__version__ = "1.0.8"
+__version__ = "1.0.9"