diff --git a/.travis.yml b/.travis.yml
index 7a128bda..8b3d6d00 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 language: node_js
-cache: npm
+cache: false
 stages:
   - check
   - test
diff --git a/package.json b/package.json
index 6a1d81a6..1ebd91a9 100644
--- a/package.json
+++ b/package.json
@@ -92,7 +92,7 @@
     "libp2p-delegated-content-routing": "^0.2.2",
     "libp2p-delegated-peer-routing": "^0.2.2",
     "libp2p-floodsub": "^0.19.0",
-    "libp2p-gossipsub": "ChainSafe/gossipsub-js#refactor/async",
+    "libp2p-gossipsub": "ChainSafe/gossipsub-js#beta/async",
     "libp2p-kad-dht": "^0.15.3",
     "libp2p-mdns": "^0.12.3",
     "libp2p-mplex": "^0.9.1",
diff --git a/src/registrar.js b/src/registrar.js
index d777458e..c4a11680 100644
--- a/src/registrar.js
+++ b/src/registrar.js
@@ -6,7 +6,6 @@ const log = debug('libp2p:peer-store')
 log.error = debug('libp2p:peer-store:error')
 
 const Topology = require('libp2p-interfaces/src/topology')
-const MulticodecTopology = require('libp2p-interfaces/src/topology/multicodec-topology')
 const { Connection } = require('libp2p-interfaces/src/connection')
 const PeerInfo = require('peer-info')
 
@@ -112,8 +111,7 @@ class Registrar {
    */
   register (topology) {
     assert(
-      Topology.isTopology(topology) ||
-      MulticodecTopology.isMulticodecTopology(topology),
+      Topology.isTopology(topology),
       'topology must be an instance of interfaces/topology')
 
     // Create topology