diff --git a/racket/typed/prim.rkt b/racket/typed/prim.rkt
index ed99767..ee261a4 100644
--- a/racket/typed/prim.rkt
+++ b/racket/typed/prim.rkt
@@ -33,6 +33,7 @@
 (define-primop positive? (→fn Int Bool))
 (define-primop negative? (→fn Int Bool))
 (define-primop current-inexact-milliseconds (→fn Int))
+(define-primop string=? (→fn String String Bool))
 
 (define-primop bytes->string/utf-8 (→ ByteString (Computation (Value String) (Endpoints) (Roles) (Spawns))))
 (define-primop string->bytes/utf-8 (→ String (Computation (Value ByteString) (Endpoints) (Roles) (Spawns))))