diff --git a/MozillaThunderbird.changes b/MozillaThunderbird.changes
index 3f36bfc..bc02f37 100644
--- a/MozillaThunderbird.changes
+++ b/MozillaThunderbird.changes
@@ -1,7 +1,7 @@
 -------------------------------------------------------------------
 Tue Aug 30 06:55:14 UTC 2016 - wr@rosenauer.org
 
-- update to Thunderbird 45.3 (boo#991809)
+- update to Thunderbird 45.3.0 (boo#991809)
   * Disposition-Notification-To could not be used in
     mail.compose.other.header
   * "edit as new message" on a received message pre-filled the sender
diff --git a/MozillaThunderbird.spec b/MozillaThunderbird.spec
index 58b3d1d..701bc44 100644
--- a/MozillaThunderbird.spec
+++ b/MozillaThunderbird.spec
@@ -17,7 +17,7 @@
 #
 
 
-%define mainversion 45.3
+%define mainversion 45.3.0
 %define update_channel release
 %define releasedate 2016082900
 
diff --git a/create-tar.sh b/create-tar.sh
index 6403d6b..5079d4c 100644
--- a/create-tar.sh
+++ b/create-tar.sh
@@ -3,7 +3,7 @@
 CHANNEL="esr45"
 BRANCH="releases/comm-$CHANNEL"
 RELEASE_TAG="THUNDERBIRD_45_3_0_RELEASE"
-VERSION="45.3"
+VERSION="45.3.0"
 
 echo "cloning $BRANCH..."
 hg clone http://hg.mozilla.org/$BRANCH thunderbird
diff --git a/l10n-45.3.tar.xz b/l10n-45.3.0.tar.xz
similarity index 100%
rename from l10n-45.3.tar.xz
rename to l10n-45.3.0.tar.xz
diff --git a/thunderbird-45.3-source.tar.xz b/thunderbird-45.3.0-source.tar.xz
similarity index 100%
rename from thunderbird-45.3-source.tar.xz
rename to thunderbird-45.3.0-source.tar.xz