diff --git a/‎packages/quicktype-core/src/language/Ruby/RubyRenderer.ts‎
Lines changed: 4 additions & 2 deletions b/‎packages/quicktype-core/src/language/Ruby/RubyRenderer.ts‎
Lines changed: 4 additions & 2 deletions
diff --git a/‎packages/quicktype-core/src/language/Ruby/language.ts‎
Lines changed: 4 additions & 1 deletion b/‎packages/quicktype-core/src/language/Ruby/language.ts‎
Lines changed: 4 additions & 1 deletion
diff --git a/‎test/languages.ts‎
Lines changed: 1 addition & 0 deletions b/‎test/languages.ts‎
Lines changed: 1 addition & 0 deletions
@@ -190,8 +190,10 @@ export class RubyRenderer extends ConvenienceRenderer {
                     optional,
                 ];
             },
-            (_transformed) => [
-                "Types::String.constrained(format: /\\A[0-9a-f]{8}-(?:[0-9a-f]{4}-){3}[0-9a-f]{12}\\z/i)",
+            (transformed) => [
+                transformed.kind === "uuid"
+                    ? "Types::String.constrained(format: /\\A[0-9a-f]{8}-(?:[0-9a-f]{4}-){3}[0-9a-f]{12}\\z/i)"
+                    : "Types::String.constrained(format: /\\A\\d{4}-\\d\\d-\\d\\dT\\d\\d:\\d\\d:\\d\\d(?:\\.\\d+)?(?:Z|[+-]\\d\\d:\\d\\d)\\z/i)",
                 optional,
             ],
         );
 
@@ -56,7 +56,10 @@ export class RubyTargetLanguage extends TargetLanguage<
     }
 
     public get stringTypeMapping() {
-        return new Map([["uuid", "uuid"] as const]);
+        return new Map([
+            ["uuid", "uuid"] as const,
+            ["date-time", "date-time"] as const,
+        ]);
     }
 
     public get supportsOptionalClassProperties(): boolean {
 
@@ -471,6 +471,7 @@ export const RubyLanguage: Language = {
         "pattern",
         "strict-optional",
         "uuid",
+        "date-time",
     ],
     output: "TopLevel.rb",
     topLevel: "TopLevel",
Original file line number	Diff line number	Diff line change
`@@ -56,7 +56,10 @@ export class RubyTargetLanguage extends TargetLanguage<`
`56`	`56`	`}`
`57`	`57`
`58`	`58`	`public get stringTypeMapping() {`
`59`		`- return new Map([["uuid", "uuid"] as const]);`
	`59`	`+ return new Map([`
	`60`	`+ ["uuid", "uuid"] as const,`
	`61`	`+ ["date-time", "date-time"] as const,`
	`62`	`+ ]);`
`60`	`63`	`}`
`61`	`64`
`62`	`65`	`public get supportsOptionalClassProperties(): boolean {`