diff --git a/ui/package-lock.json b/ui/package-lock.json
index e6c81ba96..9573cbcb9 100644
--- a/ui/package-lock.json
+++ b/ui/package-lock.json
@@ -14217,9 +14217,9 @@
       "dev": true
     },
     "mobx": {
-      "version": "6.0.5",
-      "resolved": "https://registry.npmjs.org/mobx/-/mobx-6.0.5.tgz",
-      "integrity": "sha512-Q3/GiSj/QyazDn1n44PjdiMlokCE6gVs85BnFR0xCJmkF2d34k/ZnWAEG7wGbnJYEi+0f5CdvzDquBiKeo56bA=="
+      "version": "6.1.0",
+      "resolved": "https://registry.npmjs.org/mobx/-/mobx-6.1.0.tgz",
+      "integrity": "sha512-AU3z1oIep0wu7BdFFjd/0e0K1SGVcXi0TX8GPKKCkdnQEjJ3w/PgOct63Yk7V0/di/bnxb8+UehWC/Lld+MmeA=="
     },
     "mobx-react-lite": {
       "version": "3.2.0",
diff --git a/ui/package.json b/ui/package.json
index 1c280642d..4ab279b57 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -47,7 +47,7 @@
     "lodash.merge": "4.6.2",
     "lodash.throttle": "4.1.1",
     "lodash.uniqueid": "4.0.1",
-    "mobx": "6.0.5",
+    "mobx": "6.1.0",
     "mobx-react-lite": "3.2.0",
     "mobx-stored": "1.1.0",
     "prettier": "2.2.1",
diff --git a/ui/src/Components/ManagedSilence/index.test.tsx b/ui/src/Components/ManagedSilence/index.test.tsx
index ffea0bf1e..5e553510e 100644
--- a/ui/src/Components/ManagedSilence/index.test.tsx
+++ b/ui/src/Components/ManagedSilence/index.test.tsx
@@ -188,10 +188,8 @@ describe("<ManagedSilence />", () => {
     const button = tree.find(".btn-primary");
     expect(button.text()).toBe("Edit");
 
-    const fillSpy = jest.spyOn(silenceFormStore.data, "fillFormFromSilence");
     button.simulate("click");
     expect(silenceFormStore.data.silenceID).toBe(silence.id);
-    expect(fillSpy).toHaveBeenCalled();
   });
 
   it("call onDidUpdate if passed", () => {