diff --git a/Dockerfile b/Dockerfile
index 2e1a9caadf..1be4b1181c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
 # The base image is the latest 8.x node (LTS)
-FROM node:8.13.0@sha256:3ecf259bf23f8a75555cf0b92ac5ad3c746e7e2262e937a9bed9ca1685f8e1c7
+FROM node:8.14.0@sha256:773480516f79e0948b02d7a06971b07bf76b08d706cf88a358b5b69dd4c83db0
 
 RUN mkdir -p /usr/src/app
 WORKDIR /usr/src/app
diff --git a/install/package.json b/install/package.json
index 31b7d92652..174d799f9a 100644
--- a/install/package.json
+++ b/install/package.json
@@ -111,11 +111,11 @@
         "serve-favicon": "^2.4.5",
         "sharp": "0.21.0",
         "sitemap": "^2.0.0",
-        "socket.io": "2.1.1",
+        "socket.io": "2.2.0",
         "socket.io-adapter-cluster": "^1.0.1",
         "socket.io-adapter-mongo": "^2.0.1",
         "socket.io-adapter-postgres": "^1.0.1",
-        "socket.io-client": "2.1.1",
+        "socket.io-client": "2.2.0",
         "socket.io-redis": "5.2.0",
         "socketio-wildcard": "2.0.0",
         "spdx-license-list": "^5.0.0",
diff --git a/src/categories/recentreplies.js b/src/categories/recentreplies.js
index 3ef025b281..dc3fa11271 100644
--- a/src/categories/recentreplies.js
+++ b/src/categories/recentreplies.js
@@ -85,7 +85,7 @@ module.exports = function (Categories) {
 
 		async.waterfall([
 			function (next) {
-				const categoriesToLoad = categoryData.filter(category => parseInt(category.numRecentReplies, 10) > 0);
+				const categoriesToLoad = categoryData.filter(category => category && category.numRecentReplies && parseInt(category.numRecentReplies, 10) > 0);
 				const keys = categoriesToLoad.map(category => 'cid:' + category.cid + ':recent_tids');
 				db.getSortedSetsMembers(keys, next);
 			},
@@ -153,23 +153,27 @@ module.exports = function (Categories) {
 
 	function assignTopicsToCategories(categories, topics) {
 		categories.forEach(function (category) {
-			category.posts = topics.filter(topic => topic.cid && (topic.cid === category.cid || topic.parentCid === category.cid))
-				.sort((a, b) => b.pid - a.pid)
-				.slice(0, parseInt(category.numRecentReplies, 10));
+			if (category) {
+				category.posts = topics.filter(topic => topic.cid && (topic.cid === category.cid || topic.parentCid === category.cid))
+					.sort((a, b) => b.pid - a.pid)
+					.slice(0, parseInt(category.numRecentReplies, 10));
+			}
 		});
 	}
 
 	function bubbleUpChildrenPosts(categoryData) {
 		categoryData.forEach(function (category) {
-			if (category.posts.length) {
-				return;
-			}
-			var posts = [];
-			getPostsRecursive(category, posts);
+			if (category) {
+				if (category.posts.length) {
+					return;
+				}
+				var posts = [];
+				getPostsRecursive(category, posts);
 
-			posts.sort((a, b) => b.pid - a.pid);
-			if (posts.length) {
-				category.posts = [posts[0]];
+				posts.sort((a, b) => b.pid - a.pid);
+				if (posts.length) {
+					category.posts = [posts[0]];
+				}
 			}
 		});
 	}