diff --git a/packages/runtime/src/index.ts b/packages/runtime/src/index.ts
index 9053dfdb..fa307cbe 100644
--- a/packages/runtime/src/index.ts
+++ b/packages/runtime/src/index.ts
@@ -509,7 +509,8 @@ export async function build({
     switch (routesManifest.version) {
       case 1:
       case 2:
-      case 3: {
+      case 3:
+      case 4: {
         redirects.push(...convertRedirects(routesManifest.redirects));
         rewrites.push(...convertRewrites(routesManifest.rewrites));
 
diff --git a/packages/runtime/src/utils.ts b/packages/runtime/src/utils.ts
index a3b0b062..75fbdf71 100644
--- a/packages/runtime/src/utils.ts
+++ b/packages/runtime/src/utils.ts
@@ -420,7 +420,8 @@ export async function getDynamicRoutes(
             };
           });
       }
-      case 3: {
+      case 3:
+      case 4: {
         return routesManifest.dynamicRoutes
           .filter(({ page }) =>
             omittedRoutes ? !omittedRoutes.has(page) : true
diff --git a/packages/runtime/test/integration/index.test.js b/packages/runtime/test/integration/index.test.js
index a2a25856..a203e06c 100644
--- a/packages/runtime/test/integration/index.test.js
+++ b/packages/runtime/test/integration/index.test.js
@@ -320,7 +320,7 @@ it(
 );
 
 it(
-  'Should not build the serverless-config-async example',
+  'Should build the serverless-config-async example',
   async () => {
     let error = null;
 
@@ -330,13 +330,13 @@ it(
       error = err;
     }
 
-    expect(error).not.toBe(null);
+    expect(error).toBe(null);
   },
   FOUR_MINUTES
 );
 
 it(
-  'Should not build the serverless-config-promise example',
+  'Should build the serverless-config-promise example',
   async () => {
     let error = null;
 
@@ -346,7 +346,7 @@ it(
       error = err;
     }
 
-    expect(error).not.toBe(null);
+    expect(error).toBe(null);
   },
   FOUR_MINUTES
 );
diff --git a/packages/runtime/test/integration/legacy-custom-dependency/package.json b/packages/runtime/test/integration/legacy-custom-dependency/package.json
index 3136cbfd..f8a96f0b 100644
--- a/packages/runtime/test/integration/legacy-custom-dependency/package.json
+++ b/packages/runtime/test/integration/legacy-custom-dependency/package.json
@@ -1,5 +1,6 @@
 {
   "dependencies": {
+    "encoding": "latest",
     "isomorphic-unfetch": "latest",
     "next": "7.0.0"
   }