diff --git a/builder-product.cfg b/builder-product.cfg
index 2638efa..5e16cc8 100644
--- a/builder-product.cfg
+++ b/builder-product.cfg
@@ -5,7 +5,7 @@ VENDOR="itwatch.de"
 PN="mattermost.desktop"
 NAME="Mattermost Desktop"
 DESCRIPTION="Native desktop application for Mattermost running on Windows, Mac, and Linux."
-VERSION="4.3.2"
+VERSION="4.4.0"
 RELEASE="3"
 PRIORITY="0"
 ADVICE=""
@@ -20,13 +20,13 @@ DL_SOURCE[0]="http://www.mattermost.org/wp-content/uploads/2016/04/icon.png"
 
 DL_FILE[1]="mattermost-desktop-v${VERSION//rc/-rc}-x86.msi"
 #DL_SOURCE[1]="https://github.com/mattermost/desktop/releases/download/v${VERSION//rc/-rc}/mattermost-desktop-v${VERSION//rc/-rc}-x86.msi"
-DL_SOURCE[1]="https://releases.mattermost.com/desktop/${VERSION//rc/-rc}/mattermost-desktop-v${VERSION//rc/-rc}-x86.msi"
+DL_SOURCE[1]="https://releases.mattermost.com/desktop/${VERSION//rc/-rc}/mattermost-desktop-${VERSION//rc/-rc}-x86.msi"
 DL_ARCH[1]="X86"
 DL_WINST_NAME[1]=Install32Msi
 
 DL_FILE[2]="mattermost-desktop-v${VERSION//rc/-rc}-x64.msi"
 #DL_SOURCE[2]="https://github.com/mattermost/desktop/releases/download/v${VERSION//rc/-rc}/mattermost-desktop-v${VERSION//rc/-rc}-x64.msi"
-DL_SOURCE[2]="https://releases.mattermost.com/desktop/${VERSION//rc/-rc}/mattermost-desktop-v${VERSION//rc/-rc}-x64.msi"
+DL_SOURCE[2]="https://releases.mattermost.com/desktop/${VERSION//rc/-rc}/mattermost-desktop-${VERSION//rc/-rc}-x64.msi"
 DL_ARCH[2]="X86_64"
 DL_WINST_NAME[2]=Install64Msi
 
@@ -47,9 +47,9 @@ WINST_VALUE[1]="Mattermost.exe"
 ##### Msi ######
 OPSI_INI_SECTION[0]="X86"
 OPSI_INI_OPTION[0]="MsiId32"
-OPSI_INI_VALUE[0]="{C5A1F011-E840-4C65-B860-0C748D7A285C}"
+OPSI_INI_VALUE[0]="{3D6BD834-84AB-4DD3-B6F3-77866EF8C3F5}"
 
 OPSI_INI_SECTION[1]="X86_64"
 OPSI_INI_OPTION[1]="MsiId64"
-OPSI_INI_VALUE[1]="{A44E2D12-7D92-4ABC-8366-35E1CD827C01}"
+OPSI_INI_VALUE[1]="{C91F4E20-622F-4876-8AE6-8637A99CA449}"
 
diff --git a/mattermost-desktop-v4.3.2-x64.msi.sha1sum b/mattermost-desktop-v4.3.2-x64.msi.sha1sum
deleted file mode 100644
index ef507e2..0000000
--- a/mattermost-desktop-v4.3.2-x64.msi.sha1sum
+++ /dev/null
@@ -1 +0,0 @@
-db9e227bffdb7c6ed293a43411ab93d5f49be2a3  /home/mario/.opsi-dist-cache/mattermost.desktop-4.3.2/X86_64/mattermost-desktop-v4.3.2-x64.msi
diff --git a/mattermost-desktop-v4.3.2-x86.msi.sha1sum b/mattermost-desktop-v4.3.2-x86.msi.sha1sum
deleted file mode 100644
index 1a8a98c..0000000
--- a/mattermost-desktop-v4.3.2-x86.msi.sha1sum
+++ /dev/null
@@ -1 +0,0 @@
-90d8ad490d74730a7ae6aed9866b30e30b529399  /home/mario/.opsi-dist-cache/mattermost.desktop-4.3.2/X86/mattermost-desktop-v4.3.2-x86.msi
diff --git a/mattermost-desktop-v4.4.0-x64.msi.sha1sum b/mattermost-desktop-v4.4.0-x64.msi.sha1sum
new file mode 100644
index 0000000..f5bf320
--- /dev/null
+++ b/mattermost-desktop-v4.4.0-x64.msi.sha1sum
@@ -0,0 +1 @@
+b9546a9a8acb9a079852c25781f236580f4806bd  /home/mario/.opsi-dist-cache/mattermost.desktop-4.4.0/X86_64/mattermost-desktop-v4.4.0-x64.msi
diff --git a/mattermost-desktop-v4.4.0-x86.msi.sha1sum b/mattermost-desktop-v4.4.0-x86.msi.sha1sum
new file mode 100644
index 0000000..596a994
--- /dev/null
+++ b/mattermost-desktop-v4.4.0-x86.msi.sha1sum
@@ -0,0 +1 @@
+687c6ace73ab12f5530f513e811ca35973ba7666  /home/mario/.opsi-dist-cache/mattermost.desktop-4.4.0/X86/mattermost-desktop-v4.4.0-x86.msi