diff --git a/changelog/changelog b/changelog/changelog
index a837847..1d8f725 100644
--- a/changelog/changelog
+++ b/changelog/changelog
@@ -11,5 +11,6 @@
 
 ## Misc
 
-- [#2](https://github.com/openDAQ/OpcUaModules/pull/2) Import commit history from openDAQ SDK.
 - [#1](https://github.com/openDAQ/OpcUaModules/pull/1) Project initial version.
+- [#2](https://github.com/openDAQ/OpcUaModules/pull/2) Import commit history from openDAQ SDK.
+- [#30](https://github.com/openDAQ/OpcUaModules/pull/30) Bumped to 4.0.0 — major version raised to reflect the module's move to a standalone release cycle, decoupled from openDAQ core versioning.
diff --git a/module_version b/module_version
index c06dab4..0c89fc9 100644
--- a/module_version
+++ b/module_version
@@ -1 +1 @@
-3.31.0dev
\ No newline at end of file
+4.0.0
\ No newline at end of file