diff --git a/.travis.yml b/.travis.yml
index 01c4967..fff9766 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,6 +3,10 @@ script: "./script/cibuild"
 language: ruby
 rvm:
 - 2.4.0
+addons:
+  apt:
+    packages:
+    - libcurl4-openssl-dev
 notifications:
   email: false
 env:
diff --git a/_apps/settings.md b/_apps/settings.md
index e3c93c0..37bb4e2 100644
--- a/_apps/settings.md
+++ b/_apps/settings.md
@@ -13,7 +13,6 @@ host: https://github-configurer.herokuapp.com
 installations: 131
 organizations:
 - apollographql
-- CNXTEoEorg
 - denysdovhan
 - bkeepers
 - chaijs
diff --git a/_submodules/probot b/_submodules/probot
index 05e063f..450b42c 160000
--- a/_submodules/probot
+++ b/_submodules/probot
@@ -1 +1 @@
-Subproject commit 05e063f02a8c5e082fe6640bc31051193d850359
+Subproject commit 450b42c0903d8a3135590e93044010e2b1731ac4
diff --git a/community.html b/community.html
index 8b464fa..4e03229 100644
--- a/community.html
+++ b/community.html
@@ -21,9 +21,13 @@ redirect_from:
       Contribute on GitHub
     </a>
 
-    <a class="btn btn-outline d-inline-block mb-1 mb-md-0" href="https://twitter.com/ProbotTheRobot">
+    <a class="btn btn-outline d-inline-block mb-1 mb-md-0 mr-0 mr-md-3" href="https://twitter.com/ProbotTheRobot">
       Follow on Twitter
     </a>
+
+    <a class="btn btn-outline d-inline-block mb-1" href="https://stackoverflow.com/questions/tagged/probot">
+      Ask on Stack Overflow
+    </a>
   </div>
 
   <div id="office-hours" class="d-md-flex flex-row-reverse my-6">
diff --git a/script/html-proofer b/script/html-proofer
index ae1d50b..eb62e63 100755
--- a/script/html-proofer
+++ b/script/html-proofer
@@ -9,6 +9,7 @@ url_ignores = [
   %r{https://github.com/apps/.*/installations/new},
   "https://mochajs.org/",
   %r{mit-license\.org}, # misconfigured SSL or old certs on Travis CI?
+  %r{https://localhost:*/*}, # Ignore links to localhost in documentation
 ]
 
 begin
@@ -18,7 +19,12 @@ begin
     :file_ignore => [%r{_site/api/}],
     :verbose => !!ENV["VERBOSE"],
     :check_html => true,
-    :empty_alt_ignore => true
+    :empty_alt_ignore => true,
+    :typhoeus => {
+      # Work around SSL errors: https://github.com/gjtorikian/html-proofer/issues/376
+      :ssl_verifypeer => false,
+      :ssl_verifyhost => 0
+    }
   ).run
 rescue => e
   puts "\n", e
diff --git a/test/lint_test.rb b/test/lint_test.rb
index be2093d..a2a2ea5 100644
--- a/test/lint_test.rb
+++ b/test/lint_test.rb
@@ -53,7 +53,7 @@ describe "lint test" do
       end
 
       it "host returns 200" do
-        uri = URI(data["host"] + '/probot/stats')
+        uri = URI(data["host"] + '/ping')
         res = Net::HTTP.get_response(uri)
         assert_equal "200", res.code, "Expected 200 response from #{uri}"
       end