diff --git a/CHANGELOG.md b/CHANGELOG.md
index a1f5a82e..16c87a03 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,8 +4,19 @@ All notable changes to this project will be documented in this file. Dates are d
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+#### [v3.8.4](https://github.com/simularium/simularium-viewer/compare/v3.8.3...v3.8.4)
+
+- Feature/session colors [`#400`](https://github.com/simularium/simularium-viewer/pull/400)
+- export AgentData type properly from /types and / simularium [`#401`](https://github.com/simularium/simularium-viewer/pull/401)
+- Bump ws from 7.5.9 to 7.5.10 [`#399`](https://github.com/simularium/simularium-viewer/pull/399)
+- Bump braces from 3.0.2 to 3.0.3 in /examples [`#398`](https://github.com/simularium/simularium-viewer/pull/398)
+- Bump ws from 8.16.0 to 8.17.1 in /examples [`#397`](https://github.com/simularium/simularium-viewer/pull/397)
+- convert vis-type to visType at parse time [`#393`](https://github.com/simularium/simularium-viewer/pull/393)
+
 #### [v3.8.3](https://github.com/simularium/simularium-viewer/compare/v3.8.2...v3.8.3)
 
+> 13 June 2024
+
 - Fix/null agent function [`#396`](https://github.com/simularium/simularium-viewer/pull/396)
 - spread null agent object when parsing frames [`#395`](https://github.com/simularium/simularium-viewer/pull/395)
 - send selected agent data to front end [`#392`](https://github.com/simularium/simularium-viewer/pull/392)
diff --git a/package-lock.json b/package-lock.json
index ed91bbef..574241dc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
     "name": "@aics/simularium-viewer",
-    "version": "3.8.3",
+    "version": "3.8.4",
     "lockfileVersion": 3,
     "requires": true,
     "packages": {
         "": {
             "name": "@aics/simularium-viewer",
-            "version": "3.8.3",
+            "version": "3.8.4",
             "license": "MIT",
             "dependencies": {
                 "@babel/plugin-transform-runtime": "^7.23.6",
diff --git a/package.json b/package.json
index 2e67f737..c71bebfc 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
     "name": "@aics/simularium-viewer",
-    "version": "3.8.3",
+    "version": "3.8.4",
     "description": "An npm package to view simulations.",
     "main": "es/index.js",
     "module": "es/index.js",