diff --git a/src/docs_main.cr b/src/docs_main.cr
index ab3ee2affdbc..1fec70580a04 100644
--- a/src/docs_main.cr
+++ b/src/docs_main.cr
@@ -52,6 +52,7 @@ require "./string_pool"
 require "./string_scanner"
 require "./unicode/unicode"
 require "./uri"
+require "./uri/json"
 require "./uri/params/serializable"
 require "./uuid"
 require "./uuid/json"