diff --git a/MozillaThunderbird.changes b/MozillaThunderbird.changes
index cd8cb66..2d2916a 100644
--- a/MozillaThunderbird.changes
+++ b/MozillaThunderbird.changes
@@ -1,3 +1,16 @@
+-------------------------------------------------------------------
+Thu May 11 21:16:41 UTC 2017 - wr@rosenauer.org
+
+- update to Thunderbird 52.1.1
+  * fixed crash when compacting IMAP folder (boo#1038753)
+  * Some attachments could not be opened or saved if the message
+    body is empty
+  * Unable to load full message via POP if message was downloaded
+    partially (or only headers) before
+  * Large attachments may not be shown or saved correctly if the
+    message is stored in an IMAP folder which is not synchronized
+    for offline use
+
 -------------------------------------------------------------------
 Mon May  1 08:52:52 UTC 2017 - wr@rosenauer.org
 
diff --git a/MozillaThunderbird.spec b/MozillaThunderbird.spec
index ec11d5d..253ec31 100644
--- a/MozillaThunderbird.spec
+++ b/MozillaThunderbird.spec
@@ -17,9 +17,9 @@
 #
 
 
-%define mainversion 52.1.0
+%define mainversion 52.1.1
 %define update_channel release
-%define releasedate 201704290000
+%define releasedate 201705100000
 
 %bcond_without mozilla_tb_kde4
 %bcond_with    mozilla_tb_valgrind
diff --git a/compare-locales.tar.xz b/compare-locales.tar.xz
index 7e27d96..6eeb7b2 100644
--- a/compare-locales.tar.xz
+++ b/compare-locales.tar.xz
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:a35ac9cfa29bb1905b4cc9314cb635f2bc7fab9aa57f001d84dae22f5a860ff7
+oid sha256:73246b91019b70e5761c6e72f830217d76a9da4f0af25f5a8b1fd4fe91bff804
 size 28384
diff --git a/create-tar.sh b/create-tar.sh
index b3aa918..759a505 100644
--- a/create-tar.sh
+++ b/create-tar.sh
@@ -2,8 +2,8 @@
 
 CHANNEL="esr52"
 BRANCH="releases/comm-$CHANNEL"
-RELEASE_TAG="THUNDERBIRD_52_1_0_RELEASE"
-VERSION="52.1.0"
+RELEASE_TAG="THUNDERBIRD_52_1_1_RELEASE"
+VERSION="52.1.1"
 
 echo "cloning $BRANCH..."
 hg clone http://hg.mozilla.org/$BRANCH thunderbird
diff --git a/l10n-52.1.0.tar.xz b/l10n-52.1.0.tar.xz
deleted file mode 100644
index 874c2dc..0000000
--- a/l10n-52.1.0.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:ee61355499cabe2e23a2340aa8d9a17f60dc8f71d21e39ab72f2d01e36421def
-size 26235228
diff --git a/l10n-52.1.1.tar.xz b/l10n-52.1.1.tar.xz
new file mode 100644
index 0000000..570edd6
--- /dev/null
+++ b/l10n-52.1.1.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:96ee5278d26dccae90b93d52497bffa346662472d61213dbcf2c72a05d348797
+size 26225848
diff --git a/thunderbird-52.1.0-source.tar.xz b/thunderbird-52.1.0-source.tar.xz
deleted file mode 100644
index 29b9beb..0000000
--- a/thunderbird-52.1.0-source.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:7e0ff1f855524187a9ce0773f6c64aee652679d1e73a0d3d288c8e89de3fd692
-size 240298004
diff --git a/thunderbird-52.1.1-source.tar.xz b/thunderbird-52.1.1-source.tar.xz
new file mode 100644
index 0000000..aa19478
--- /dev/null
+++ b/thunderbird-52.1.1-source.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:9a35e6746c3704f0f44e89fcb485fe0d62246afdfd238af78f619f36de0a8f3f
+size 240259552