diff --git a/HISTORY.rst b/HISTORY.rst
index 90b9ed6..ec580b3 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -1,6 +1,11 @@
 History
 =======
 
+0.6.0 (2023-06-19)
+------------------
+- Added optimization based on Stewart et al. (2017) algorithm
+- Added support for computing rotated PGA, PGV, and PGD
+
 0.5.4 (2018-07-27)
 ------------------
 - Added MANIFEST.in
diff --git a/setup.py b/setup.py
index f52ae03..523f6c0 100644
--- a/setup.py
+++ b/setup.py
@@ -9,7 +9,7 @@
 
 setup(
     name="pyRotd",
-    version="0.5.4",
+    version="0.6.0",
     description="Rotated response spectrum calculation implemented in Python.",
     long_description=readme + "\n\n" + history,
     url="http://github.com/arkottke/pyrotd",