diff --git a/CHANGELOG.md b/CHANGELOG.md
index a753a1ae..fc1e796b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## 0.4.0
+
+* State verification to prevent CSRF attacks
+* Rewrite cookie logic to get rid of `code-verifier` and `original-path` cookies
+* Config value checks
+* VSCode Settings to Format on Save
+* Add fmt and Clippy to CI
+
 ## 0.3.4
 
 * Check for three Host Headers
diff --git a/Cargo.toml b/Cargo.toml
index 993942fc..1c6e3524 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 publish = false
 name = "wasm-oidc-plugin"
-version = "0.3.4"
+version = "0.4.0"
 authors = ["WWU Cloud Developer <cloud@uni-muenster.de>, Anton Engelhardt <antoncengelhardt@icloud.com>"]
 description = "WASM OIDC Envoy Plugin"
 license = "Apache-2.0"