diff --git a/packages/kopano-deskapp-nightly/kopano-deskapp-nightly.nuspec b/packages/kopano-deskapp-nightly/kopano-deskapp-nightly.nuspec
index e3218d8..211af50 100755
--- a/packages/kopano-deskapp-nightly/kopano-deskapp-nightly.nuspec
+++ b/packages/kopano-deskapp-nightly/kopano-deskapp-nightly.nuspec
@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2011/08/nuspec.xsd">
     <metadata>
         <id>kopano-deskapp-nightly</id>
-        <version>1.7.13</version>
+        <version>1.7.15</version>
         <title>Kopano DeskApp</title>
         <authors>Kopano</authors>
         <owners>foo.li systeme + software</owners>
@@ -14,7 +14,7 @@
 
 DeskApp is designed to be the bridge between WebApp and the desktop. DeskApp adds features a web application in a browser can’t, such as being set as the default email client, integrate with the file system to send any file as an attachment. Or even with the operating system so you can send emails from any office application.</description>
         <summary>Kopano DeskApp</summary>
-        <releaseNotes>release 1.7.13 (2018-04-26)</releaseNotes>
+        <releaseNotes>release 1.7.15 (2018-05-01)</releaseNotes>
         <copyright>2018 Kopano</copyright>
         <language />
         <tags>groupware kopano deskapp nightly admin</tags>
diff --git a/packages/kopano-deskapp-nightly/tools/chocolateyinstall.ps1 b/packages/kopano-deskapp-nightly/tools/chocolateyinstall.ps1
index 61c8608..cb0531e 100755
--- a/packages/kopano-deskapp-nightly/tools/chocolateyinstall.ps1
+++ b/packages/kopano-deskapp-nightly/tools/chocolateyinstall.ps1
@@ -6,12 +6,12 @@ $packageName    = 'kopano-deskapp-nightly'
 $packageSearch  = 'Kopano DeskApp'
 $installerType  = 'msi'
 $silentArgs     = '/qb'
-$version        = '1.7.13'
+$version        = '1.7.15'
 $url            = 'https://download.kopano.io/community/deskapp:/Windows/kopano-deskapp-' + $version + '-x86.msi'
 $url64          = 'https://download.kopano.io/community/deskapp:/Windows/kopano-deskapp-' + $version + '-x64.msi'
-$checksum       = 'D79D6959D6AFF13A4F76B78BC25BF789987FC347'
+$checksum       = '65C091BF520F565D90DE996361F835260F187833'
 $checksumType   = 'sha1'
-$checksum64     = '66A2056FFAE7BCBC113064CD4747BD6897E8C812'
+$checksum64     = 'BDFBC84140EA0C5B52FFD238443DBA9EF2AED1E1'
 $checksumType64 = $checksumType
 
 try {