diff --git a/blueprintcompiler/lsp.py b/blueprintcompiler/lsp.py
index 60f7412..fbc45ea 100644
--- a/blueprintcompiler/lsp.py
+++ b/blueprintcompiler/lsp.py
@@ -264,10 +264,15 @@ class LanguageServer:
         })
 
     def _create_diagnostic(self, text, err):
+        if isinstance(err, CompileWarning):
+            severity = DiagnosticSeverity.Warning
+        else:
+            severity = DiagnosticSeverity.Error
+
         return {
             "range": utils.idxs_to_range(err.start, err.end, text),
             "message": err.message,
-            "severity": 1,
+            "severity": severity,
         }
 
 
diff --git a/blueprintcompiler/lsp_utils.py b/blueprintcompiler/lsp_utils.py
index 062b7e4..5664ab6 100644
--- a/blueprintcompiler/lsp_utils.py
+++ b/blueprintcompiler/lsp_utils.py
@@ -103,6 +103,14 @@ class SemanticTokenType(enum.IntEnum):
     EnumMember = 0
 
 
+class DiagnosticSeverity(enum.IntEnum):
+    Error = 1
+    Warning = 2
+    Information = 3
+    Hint = 4
+
+
+
 @dataclass
 class SemanticToken:
     start: int