diff --git a/editor-extensions/vscode/syntaxes/grain.json b/editor-extensions/vscode/syntaxes/grain.json
index a30997a..69242a0 100644
--- a/editor-extensions/vscode/syntaxes/grain.json
+++ b/editor-extensions/vscode/syntaxes/grain.json
@@ -1084,6 +1084,12 @@
                 "1": { "name": "punctuation.definition.parameters.grain" }
               },
               "patterns": [
+                {
+                  "match": "(\\||\\bas\\b)",
+                  "captures": {
+                    "1": { "name": "keyword.operator.grain" }
+                  }
+                },
                 {
                   "match": "\\b([a-z]\\w*)\\b",
                   "captures": {
@@ -1109,6 +1115,12 @@
             }
           ]
         },
+        {
+          "match": "(\\||\\bas\\b)",
+          "captures": {
+            "1": { "name": "keyword.operator.grain" }
+          }
+        },
         {
           "match": "\\b([a-z]\\w*)\\b",
           "captures": {