diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe49fbe2..0c5a9bbc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [5.3.1](https://github.com/cailloumajor/opcua-proxy/compare/v5.3.0...v5.3.1) (2023-09-13)
+
+
+### Bug Fixes
+
+* serialize null strings as empty strings ([850e42b](https://github.com/cailloumajor/opcua-proxy/commit/850e42b5e8bd54217fd7f8b53bde7528973e791c))
+
 ## [5.3.0](https://github.com/cailloumajor/opcua-proxy/compare/v5.2.9...v5.3.0) (2023-09-13)
 
 
diff --git a/Cargo.lock b/Cargo.lock
index 386b2ae2..de552f2d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1062,7 +1062,7 @@ dependencies = [
 
 [[package]]
 name = "opcua-proxy"
-version = "5.3.0"
+version = "5.3.1"
 dependencies = [
  "anyhow",
  "arcstr",
diff --git a/Cargo.toml b/Cargo.toml
index 93c4cb41..cce999c8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "opcua-proxy"
 description = "OPC-UA proxy"
-version = "5.3.0"
+version = "5.3.1"
 edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html