diff --git a/CHANGELOG.md b/CHANGELOG.md
index 54dc9c9f971..2606e2e566e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,22 @@
 
 ## Current develop
 
+### Added (new features/APIs/variables/...)
+
+### Fixed (Repair bugs, etc)
+
+### Changed (changing behavior/API/variables/...)
+
+### Infrastructure (changes irrelevant to downstream codes)
+
+### Removed (removing behavior/API/varaibles/...)
+
+
+## Release 1.9.1
+Date: 11/7/2024
+
+Release is in preparation for JOSS publication.
+
 ### Added (new features/APIs/variables/...)
 - [[PR416]](https://github.com/lanl/singularity-eos/pull/416) Gibbs free energy
 - [[PR361]](https://github.com/lanl/singularity-eos/pull/361) Added tests for PTEsolver and added a strawman kinetic phase transition framework
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 42711083135..a415102c42d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -24,7 +24,7 @@ endif()
 # declare the project name
 project(
   singularity-eos
-  VERSION 1.9.0
+  VERSION 1.9.1
   LANGUAGES NONE)
 
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")