diff --git a/course-matrix/frontend/src/models/signup-form.ts b/course-matrix/frontend/src/models/signup-form.ts
index 543b08c8..d6969f42 100644
--- a/course-matrix/frontend/src/models/signup-form.ts
+++ b/course-matrix/frontend/src/models/signup-form.ts
@@ -12,6 +12,7 @@ export const SignupFormSchema: ZodType<SignupForm> = z
     password: z
       .string()
       .min(8, "Password must be at least 8 characters")
+      .max(50, "Password must be 50 characters or less")
       .regex(/[A-Z]/, "Password must contain at least one uppercase letter")
       .regex(/[a-z]/, "Password must contain at least one lowercase letter")
       .regex(/[0-9]/, "Password must contain at least one number")