diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0fa6c06a0..210c9e901 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Snyk Security Changelog
 
+## [2.12.3]
+- update to LS protocol version 12
+
 ## [2.12.2]
 - Add CSS rules for `.light-only` and `.dark-only` to the LSP implementation. This allows the LSP to apply different styles based on the current theme.
 
diff --git a/src/snyk/common/constants/languageServer.ts b/src/snyk/common/constants/languageServer.ts
index 60ecd3320..c6220ebdc 100644
--- a/src/snyk/common/constants/languageServer.ts
+++ b/src/snyk/common/constants/languageServer.ts
@@ -2,7 +2,7 @@
 // Language Server name, used e.g. for the output channel
 export const SNYK_LANGUAGE_SERVER_NAME = 'Snyk Language Server';
 // The internal language server protocol version for custom messages and configuration
-export const PROTOCOL_VERSION = 11;
+export const PROTOCOL_VERSION = 12;
 
 // LS protocol methods (needed for not having to rely on vscode dependencies in testing)
 export const DID_CHANGE_CONFIGURATION_METHOD = 'workspace/didChangeConfiguration';