diff --git a/config/gitlab.yml.example b/config/gitlab.yml.example
index 14fb285f4f8c632c42ef305f014cda831baac29b..e4fd20f9454c70dfbddc39954f501422949b1bfa 100644
--- a/config/gitlab.yml.example
+++ b/config/gitlab.yml.example
@@ -159,6 +159,13 @@ production: &base
     # Number of seconds to wait for HTTP response after sending webhook HTTP POST request (default: 10)
     # webhook_timeout: 10
 
+    ## HTTP client settings
+    http_client:
+        # Filename of HTTP client pem
+        # tls_client_cert_file:
+        # PEM password (optional)
+        # tls_client_cert_password:
+
     ### GraphQL Settings
     # Tells the rails application how long it has to complete a GraphQL request.
     # We suggest this value to be higher than the database timeout value
diff --git a/config/initializers/gitlab_http.rb b/config/initializers/gitlab_http.rb
index 8a84313a7fb9260bd91ef3a97c46505b0c49e8c5..cd891f29584ea05121b75736b4e4cc2439b1c0f9 100644
--- a/config/initializers/gitlab_http.rb
+++ b/config/initializers/gitlab_http.rb
@@ -24,3 +24,11 @@
     Gitlab::SilentMode.log_info(message: message, outbound_http_request_method: http_method)
   end
 end
+
+if Gitlab.config.gitlab['http_client']
+  pem = File.read(Gitlab.config.gitlab['http_client']['tls_client_cert_file'])
+  password = Gitlab.config.gitlab['http_client']['tls_client_cert_password']
+
+  Gitlab::HTTP_V2::Client.pem(pem, password)
+  Gitlab::LegacyHTTP.pem(pem, password)
+end