diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0f1eb4f..77caf47 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 All notable changes to the "vscode-solidity-language" extension will be documented in this file.
 
-## v0.1.0
+## v0.0.6
+
+- fix: match ucase const - #1
+
+## v0.0.5
 
 - Initial release
\ No newline at end of file
diff --git a/package.json b/package.json
index 0f16569..236f33e 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
     "publisher": "tintinweb",
     "icon": "images/icon.png",
     "preview": true,
-    "version": "0.0.5",
+    "version": "0.0.6",
     "engines": {
         "vscode": "^1.60.0"
     },
diff --git a/src/syntaxes/solidity.tmLanguage.json b/src/syntaxes/solidity.tmLanguage.json
index 202e983..f2dcdeb 100644
--- a/src/syntaxes/solidity.tmLanguage.json
+++ b/src/syntaxes/solidity.tmLanguage.json
@@ -282,7 +282,7 @@
             "name": "constant.language.currency.solidity"
         },
         "constant-ucase": {
-            "match": "\\b([A-Z09_]+)\\b",
+            "match": "\\b([A-Z0-9_]+)\\b",
             "name": "constant.language.ucase.solidity"
         },
         "number": {