diff --git a/cache.go b/cache.go
index 9830aa6..01fdd91 100644
--- a/cache.go
+++ b/cache.go
@@ -125,10 +125,18 @@ func cacheMiddleware(store *cacheStore, ttl time.Duration) gin.HandlerFunc {
 		// Serve from cache if a valid entry exists.
 		if entry := store.get(key); entry != nil {
 			for k, vals := range entry.headers {
+				if http.CanonicalHeaderKey(k) == "X-Request-ID" {
+					continue
+				}
 				for _, v := range vals {
 					c.Writer.Header().Set(k, v)
 				}
 			}
+			if requestID := GetRequestID(c); requestID != "" {
+				c.Writer.Header().Set("X-Request-ID", requestID)
+			} else if requestID := c.GetHeader("X-Request-ID"); requestID != "" {
+				c.Writer.Header().Set("X-Request-ID", requestID)
+			}
 			c.Writer.Header().Set("X-Cache", "HIT")
 			c.Writer.WriteHeader(entry.status)
 			_, _ = c.Writer.Write(entry.body)
diff --git a/cache_test.go b/cache_test.go
index 3e48349..fa88610 100644
--- a/cache_test.go
+++ b/cache_test.go
@@ -214,6 +214,47 @@ func TestWithCache_Good_CombinesWithOtherMiddleware(t *testing.T) {
 	}
 }
 
+func TestWithCache_Good_PreservesCurrentRequestIDOnHit(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+	grp := &cacheCounterGroup{}
+	e, _ := api.New(
+		api.WithRequestID(),
+		api.WithCache(5*time.Second),
+	)
+	e.Register(grp)
+
+	h := e.Handler()
+
+	w1 := httptest.NewRecorder()
+	req1, _ := http.NewRequest(http.MethodGet, "/cache/counter", nil)
+	req1.Header.Set("X-Request-ID", "first-request-id")
+	h.ServeHTTP(w1, req1)
+	if w1.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d", w1.Code)
+	}
+	if got := w1.Header().Get("X-Request-ID"); got != "first-request-id" {
+		t.Fatalf("expected first response request ID %q, got %q", "first-request-id", got)
+	}
+
+	w2 := httptest.NewRecorder()
+	req2, _ := http.NewRequest(http.MethodGet, "/cache/counter", nil)
+	req2.Header.Set("X-Request-ID", "second-request-id")
+	h.ServeHTTP(w2, req2)
+	if w2.Code != http.StatusOK {
+		t.Fatalf("expected 200, got %d", w2.Code)
+	}
+
+	if got := w2.Header().Get("X-Request-ID"); got != "second-request-id" {
+		t.Fatalf("expected cached response to preserve current request ID %q, got %q", "second-request-id", got)
+	}
+	if got := w2.Header().Get("X-Cache"); got != "HIT" {
+		t.Fatalf("expected X-Cache=HIT, got %q", got)
+	}
+	if body1, body2 := w1.Body.String(), w2.Body.String(); body1 != body2 {
+		t.Fatalf("expected cached body %q, got %q", body1, body2)
+	}
+}
+
 func TestWithCache_Good_ExpiredCacheMisses(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	grp := &cacheCounterGroup{}