diff --git a/CHANGELOG.md b/CHANGELOG.md
index ece61ece0..36b77fd11 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,25 @@
 
 All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
 
+## [18.4.0](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/compare/v18.3.0...v18.4.0) (2020-08-02)
+
+
+### Bug Fixes
+
+* **migration:** make index migration truly idempotent ([7a17535](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/commit/7a17535))
+* weird sql casting ([eb9c676](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/commit/eb9c676))
+* **set-serializable:** logging limit ([60be62b](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/commit/60be62b))
+* better concurrency behaviour ([a0392dd](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/commit/a0392dd))
+* suppress exceptions relating to expired sessions ([d47d6aa](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/commit/d47d6aa))
+
+
+### Features
+
+* migrate indexes ([dfe68d5](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/commit/dfe68d5))
+* **files:** safer file deletion ([88a9239](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/commit/88a9239))
+
+
+
 ## [18.3.0](https://gitlab2.rz.ifi.lmu.de/uni2work/uni2work/compare/v18.2.2...v18.3.0) (2020-07-28)
 
 
diff --git a/package-lock.json b/package-lock.json
index c86aab431..6357927a7 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "uni2work",
-  "version": "18.3.0",
+  "version": "18.4.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
diff --git a/package.json b/package.json
index bf15ad329..91e5e1937 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "uni2work",
-  "version": "18.3.0",
+  "version": "18.4.0",
   "description": "",
   "keywords": [],
   "author": "",
diff --git a/package.yaml b/package.yaml
index cfabb80ef..ec34e6c40 100644
--- a/package.yaml
+++ b/package.yaml
@@ -1,5 +1,5 @@
 name:    uniworx
-version: 18.3.0
+version: 18.4.0
 
 dependencies:
   - base