diff --git a/_metadata.py b/_metadata.py
index 38203fd2..5872afe7 100644
--- a/_metadata.py
+++ b/_metadata.py
@@ -1,2 +1,2 @@
-__extension_version__ = "0.38.1"
+__extension_version__ = "0.39.0rc2"
 __extension_name__ = "pytket-quantinuum"
diff --git a/docs/changelog.md b/docs/changelog.md
index d472be67..d962a9e4 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -4,7 +4,7 @@
 
 # Changelog
 
-## Unreleased
+## 0.39.0rc2 (October 2024)
 
 - Use QIR by default for program submission.
 - Update pytket-qir version requirement to 0.16.