diff --git a/kernelspec-spec/kernelspec.schema.json b/kernelspec-spec/kernelspec.schema.json
index 2a3ca59a..3f682027 100644
--- a/kernelspec-spec/kernelspec.schema.json
+++ b/kernelspec-spec/kernelspec.schema.json
@@ -16,7 +16,7 @@
                     "items": {
                         "type": "string"
                     },
-                    "minItems": 3
+                    "minItems": 1
                 }
             }
         },