diff --git a/server/src/tools/semantic_tokens.py b/server/src/tools/semantic_tokens.py
index f701605..33a561f 100644
--- a/server/src/tools/semantic_tokens.py
+++ b/server/src/tools/semantic_tokens.py
@@ -108,6 +108,12 @@ class _Highlighter(Visitor):
             if name == "global":
                 line, col = routine.contents_pos
                 self._tokens.append((((line - 1, col - 1), len(name), "keyword", [])))
+                first_arg = command.args[0]
+                token_info = self._get_token_info(first_arg)
+                if token_info:
+                    (line, col), length = token_info
+                    mods = [TokenModifier.declaration, TokenModifier.write]
+                    self._tokens.append(((line, col), length, "variable", mods))
 
         if routine.contents == "puts":
             line, col = routine.contents_pos