diff --git a/CHANGELOG.md b/CHANGELOG.md
index a2459e9..e6c10e1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Next version
+## 0.6.6 - August 14, 2023
 
 ### ✨ Improved
 
diff --git a/pyproject.toml b/pyproject.toml
index 47ecaca..1fb1ed9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "sdss-lvmscp"
-version = "0.6.6a0"
+version = "0.6.6"
 description = "LVM spectrograph control package."
 authors = ["José Sánchez-Gallego <gallegoj@uw.edu>", "Changgon Kim <changgonkim@khu.ac.kr>"]
 maintainers = ["José Sánchez-Gallego <gallegoj@uw.edu>"]