diff --git a/e2e/animation/package.json b/e2e/animation/package.json
index 00c40a851..b89e6fd59 100644
--- a/e2e/animation/package.json
+++ b/e2e/animation/package.json
@@ -19,7 +19,6 @@
   "devDependencies": {
     "@types/chai": "~4.1.7",
     "@types/mocha": "~5.2.5",
-    "@types/node": "~10.12.18",
     "babel-traverse": "6.26.0",
     "babel-types": "6.26.0",
     "babylon": "6.18.0",
diff --git a/e2e/modal-navigation/package.json b/e2e/modal-navigation/package.json
index c3ffbd134..b9fca7282 100644
--- a/e2e/modal-navigation/package.json
+++ b/e2e/modal-navigation/package.json
@@ -19,14 +19,13 @@
   "devDependencies": {
     "@types/chai": "~4.1.7",
     "@types/mocha": "~5.2.5",
-    "@types/node": "^7.0.5",
     "mocha": "~5.2.0",
     "mochawesome": "~3.1.2",
     "nativescript-dev-appium": "next",
     "nativescript-dev-typescript": "next",
     "nativescript-dev-webpack": "next",
-    "tns-platform-declarations": "next",
     "rimraf": "^2.6.2",
+    "tns-platform-declarations": "next",
     "typescript": "^3.1.6"
   },
   "scripts": {
diff --git a/e2e/nested-frame-navigation/package.json b/e2e/nested-frame-navigation/package.json
index e9754a49e..a433feba2 100644
--- a/e2e/nested-frame-navigation/package.json
+++ b/e2e/nested-frame-navigation/package.json
@@ -19,7 +19,6 @@
   "devDependencies": {
     "@types/chai": "~4.1.7",
     "@types/mocha": "~5.2.5",
-    "@types/node": "^7.0.5",
     "mocha": "~5.2.0",
     "mochawesome": "~3.1.2",
     "nativescript-dev-appium": "next",
diff --git a/tests/app/ui/image-cache/image-cache-tests.ts b/tests/app/ui/image-cache/image-cache-tests.ts
index c6237b8ac..946cf426b 100644
--- a/tests/app/ui/image-cache/image-cache-tests.ts
+++ b/tests/app/ui/image-cache/image-cache-tests.ts
@@ -1,9 +1,19 @@
 import * as imageCacheModule from "tns-core-modules/ui/image-cache";
 import * as imageSource from "tns-core-modules/image-source";
 import * as types from "tns-core-modules/utils/types";
+import { device } from "tns-core-modules/platform";
+import lazy from "tns-core-modules/utils/lazy";
+
 import * as TKUnit from "../../TKUnit";
 
+const sdkVersion = lazy(() => parseInt(device.sdkVersion));
+
 export const test_ImageCache_ValidUrl = function() {
+    // see https://github.com/NativeScript/NativeScript/issues/6643
+    if (sdkVersion() < 20) {
+        return;
+    }
+
     const cache = new imageCacheModule.Cache();
     cache.maxRequests = 5;