diff --git a/internal/api/subject_test.go b/internal/api/subject_test.go
index 29754b4a2..25b2d9419 100644
--- a/internal/api/subject_test.go
+++ b/internal/api/subject_test.go
@@ -111,3 +111,28 @@ func TestDislikeSubject(t *testing.T) {
 		assert.Equal(t, "false", val4.String())
 	})
 }
+
+func TestUpdateSubject(t *testing.T) {
+	t.Run("successful request person", func(t *testing.T) {
+		app, router, _ := NewApiTest()
+		UpdateSubject(router)
+		r := PerformRequestWithBody(app, "PUT", "/api/v1/subjects/jqu0xs11qekk9jx8", `{"Name": "Updated Name"}`)
+		val := gjson.Get(r.Body.String(), "Name")
+		assert.Equal(t, "Updated Name", val.String())
+		assert.Equal(t, http.StatusOK, r.Code)
+	})
+
+	t.Run("invalid request", func(t *testing.T) {
+		app, router, _ := NewApiTest()
+		UpdateSubject(router)
+		r := PerformRequestWithBody(app, "PUT", "/api/v1/subjects/jqu0xs11qekk9jx8", `{"Name": 123}`)
+		assert.Equal(t, http.StatusBadRequest, r.Code)
+	})
+
+	t.Run("not found", func(t *testing.T) {
+		app, router, _ := NewApiTest()
+		UpdateSubject(router)
+		r := PerformRequestWithBody(app, "PUT", "/api/v1/subjectss/xxx", `{"Name": "Updated Name"}`)
+		assert.Equal(t, http.StatusNotFound, r.Code)
+	})
+}