diff --git a/app/Constants.php b/app/Constants.php
index c730456f315e..2bc1a0fdf40e 100644
--- a/app/Constants.php
+++ b/app/Constants.php
@@ -342,7 +342,7 @@ if (! defined('APP_NAME')) {
     define('NINJA_APP_URL', env('NINJA_APP_URL', 'https://app.invoiceninja.com'));
     define('NINJA_DOCS_URL', env('NINJA_DOCS_URL', 'http://docs.invoiceninja.com/en/latest'));
     define('NINJA_DATE', '2000-01-01');
-    define('NINJA_VERSION', '4.4.1' . env('NINJA_VERSION_SUFFIX'));
+    define('NINJA_VERSION', '4.4.2' . env('NINJA_VERSION_SUFFIX'));
     define('NINJA_TERMS_VERSION', '');
 
     define('SOCIAL_LINK_FACEBOOK', env('SOCIAL_LINK_FACEBOOK', 'https://www.facebook.com/invoiceninja'));
diff --git a/database/migrations/2018_03_08_150414_add_slack_notifications.php b/database/migrations/2018_03_08_150414_add_slack_notifications.php
index ef67735c13bc..546af5932445 100644
--- a/database/migrations/2018_03_08_150414_add_slack_notifications.php
+++ b/database/migrations/2018_03_08_150414_add_slack_notifications.php
@@ -20,30 +20,34 @@ class AddSlackNotifications extends Migration
 
         DB::statement('UPDATE activities SET client_id = NULL WHERE client_id = 0');
 
-        Schema::table('activities', function ($table) {
-            $table->foreign('client_id')->references('id')->on('clients')->onDelete('cascade');
-            $table->index('payment_id');
-        });
+        if (! Schema::hasColumn('users', 'slack_webhook_url')) {
+            Schema::table('users', function ($table) {
+                $table->string('slack_webhook_url')->nullable();
+                $table->string('accepted_terms_version')->nullable();
+                $table->timestamp('accepted_terms_timestamp')->nullable();
+                $table->string('accepted_terms_ip')->nullable();
+            });
+        }
 
-        Schema::table('users', function ($table) {
-            $table->string('slack_webhook_url')->nullable();
-            $table->string('accepted_terms_version')->nullable();
-            $table->timestamp('accepted_terms_timestamp')->nullable();
-            $table->string('accepted_terms_ip')->nullable();
-        });
-
-        Schema::table('accounts', function ($table) {
-            $table->boolean('auto_archive_invoice')->default(false)->nullable();
-            $table->boolean('auto_archive_quote')->default(false)->nullable();
-            $table->boolean('auto_email_invoice')->default(true)->nullable();
-            $table->boolean('send_item_details')->default(false)->nullable();
-        });
-
-        Schema::table('expenses', function ($table) {
-            $table->foreign('client_id')->references('id')->on('clients')->onDelete('cascade');
-        });
+        if (! Schema::hasColumn('accounts', 'auto_archive_invoice')) {
+            Schema::table('accounts', function ($table) {
+                $table->boolean('auto_archive_invoice')->default(false)->nullable();
+                $table->boolean('auto_archive_quote')->default(false)->nullable();
+                $table->boolean('auto_email_invoice')->default(true)->nullable();
+                $table->boolean('send_item_details')->default(false)->nullable();
+            });
+        }
 
         try {
+            Schema::table('expenses', function ($table) {
+                $table->foreign('client_id')->references('id')->on('clients')->onDelete('cascade');
+            });
+
+            Schema::table('activities', function ($table) {
+                $table->foreign('client_id')->references('id')->on('clients')->onDelete('cascade');
+                $table->index('payment_id');
+            });
+
             Schema::table('companies', function ($table) {
                 $table->dropForeign('companies_payment_id_foreign');
             });
diff --git a/docs/conf.py b/docs/conf.py
index 91d016fa91fa..51b5d8eda19f 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -59,7 +59,7 @@ author = u'Invoice Ninja'
 # The short X.Y version.
 version = u'4.4'
 # The full version, including alpha/beta/rc tags.
-release = u'4.4.1'
+release = u'4.4.2'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.