diff --git a/gleam.toml.schema.json b/gleam.toml.schema.json
index ea2cc52..9428d42 100644
--- a/gleam.toml.schema.json
+++ b/gleam.toml.schema.json
@@ -20,7 +20,7 @@
         "version": {
             "description": "The version of your project",
             "type": "string",
-            "pattern": "^[0-9]+.[0-9]+.[0-9]+(-[0-9A-Za-z-.]+)?(+[0-9A-Za-z-.]+)?$",
+            "pattern": "^[0-9]+\\.[0-9]+\\.[0-9]+(-[0-9A-Za-z-.]+)?(\\+[0-9A-Za-z-.]+)?$",
             "examples": ["1.0.0"]
         },
         "gleam_version": {