diff --git a/.release-please.manifest.json b/.release-please.manifest.json
index c3f1463..96f1cd9 100644
--- a/.release-please.manifest.json
+++ b/.release-please.manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.2.0"
+  ".": "1.3.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9675b1f..aa8dfaa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.3.0](https://github.com/copick/chimerax-copick/compare/chimerax-copick-v1.2.0...chimerax-copick-v1.3.0) (2025-07-07)
+
+
+### ✨ Features
+
+* Fix performance issues with large projects ([#47](https://github.com/copick/chimerax-copick/issues/47)) ([bec70f4](https://github.com/copick/chimerax-copick/commit/bec70f494a0b085ef2a0200407cea9a561982f5a))
+
 ## [1.2.0](https://github.com/copick/chimerax-copick/compare/chimerax-copick-v1.1.0...chimerax-copick-v1.2.0) (2025-07-06)
 
 
diff --git a/src/version.py b/src/version.py
index c68196d..67bc602 100644
--- a/src/version.py
+++ b/src/version.py
@@ -1 +1 @@
-__version__ = "1.2.0"
+__version__ = "1.3.0"