diff --git a/MozillaThunderbird.changes b/MozillaThunderbird.changes
index dec44c3..248711c 100644
--- a/MozillaThunderbird.changes
+++ b/MozillaThunderbird.changes
@@ -1,3 +1,26 @@
+-------------------------------------------------------------------
+Thu Aug  5 15:47:34 UTC 2021 - Wolfgang Rosenauer <wr@rosenauer.org>
+
+- Mozilla Thunderbird 78.13.0
+  * removed WeTransfer integration package (not supported by vendor
+    any longer)
+  MFSA 2021-35 (bsc#1188891)
+  * CVE-2021-29986 (bmo#1696138)
+    Race condition when resolving DNS names could have led to
+    memory corruption
+  * CVE-2021-29988 (bmo#1717922)
+    Memory corruption as a result of incorrect style treatment
+  * CVE-2021-29984 (bmo#1720031)
+    Incorrect instruction reordering during JIT optimization
+  * CVE-2021-29980 (bmo#1722204)
+    Uninitialized memory in a canvas object could have led to
+    memory corruption
+  * CVE-2021-29985 (bmo#1722083)
+    Use-after-free media channels
+  * CVE-2021-29989 (bmo#1662676, bmo#1666184, bmo#1719178,
+    bmo#1719998, bmo#1720568)
+    Memory safety bugs fixed in Thunderbird 78.13
+
 -------------------------------------------------------------------
 Wed Jul 14 06:34:13 UTC 2021 - Wolfgang Rosenauer <wr@rosenauer.org>
 
diff --git a/MozillaThunderbird.spec b/MozillaThunderbird.spec
index 3e8cc4a..8b7ff06 100644
--- a/MozillaThunderbird.spec
+++ b/MozillaThunderbird.spec
@@ -26,8 +26,8 @@
 # major 69
 # mainver %major.99
 %define major          78
-%define mainver        %major.12.0
-%define orig_version   78.12.0
+%define mainver        %major.13.0
+%define orig_version   78.13.0
 %define orig_suffix    %{nil}
 %define update_channel release
 %define source_prefix  thunderbird-%{orig_version}
@@ -658,7 +658,6 @@ exit 0
 %dir %{progdir}/chrome/
 %{progdir}/chrome/icons/
 %{progdir}/defaults/
-%{progdir}/features/
 %{progdir}/isp/
 %{_datadir}/appdata/
 %{_datadir}/applications/%{desktop_file_name}.desktop
diff --git a/l10n-78.12.0.tar.xz b/l10n-78.12.0.tar.xz
deleted file mode 100644
index cda56c3..0000000
--- a/l10n-78.12.0.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:11b47467ec61040f422143499a10b31b0d8599f30fc09368c8b595ca89b6da93
-size 29109488
diff --git a/l10n-78.13.0.tar.xz b/l10n-78.13.0.tar.xz
new file mode 100644
index 0000000..cb27284
--- /dev/null
+++ b/l10n-78.13.0.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:7bedbcd970a24ebe34ef36398c901a69d028b6979793b925f613aacae5001d3f
+size 29083700
diff --git a/tar_stamps b/tar_stamps
index 08250a2..d1bc682 100644
--- a/tar_stamps
+++ b/tar_stamps
@@ -1,10 +1,10 @@
 PRODUCT="thunderbird"
 CHANNEL="esr78"
-VERSION="78.12.0"
+VERSION="78.13.0"
 VERSION_SUFFIX=""
-PREV_VERSION="78.11.0"
+PREV_VERSION="78.12.0"
 PREV_VERSION_SUFFIX=""
 #SKIP_LOCALES="" # Uncomment to skip l10n and compare-locales-generation
 RELEASE_REPO="https://hg.mozilla.org/releases/comm-esr78"
-RELEASE_TAG="6796ff47626a009d169a1e9fd1f307a6c14b7ed5"
-RELEASE_TIMESTAMP="20210712120515"
+RELEASE_TAG="adcfedf831da719455116546865f9a5faea848a6"
+RELEASE_TIMESTAMP="20210802223056"
diff --git a/thunderbird-78.12.0.source.tar.xz b/thunderbird-78.12.0.source.tar.xz
deleted file mode 100644
index 19d6b16..0000000
--- a/thunderbird-78.12.0.source.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e2a214cf6b056fb5fde9bcaf9aee9a619bab337f163d99b1cc216d1c44d6f200
-size 355933664
diff --git a/thunderbird-78.12.0.source.tar.xz.asc b/thunderbird-78.12.0.source.tar.xz.asc
deleted file mode 100644
index 6acd266..0000000
--- a/thunderbird-78.12.0.source.tar.xz.asc
+++ /dev/null
@@ -1,16 +0,0 @@
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new file mode 100644
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--- /dev/null
+++ b/thunderbird-78.13.0.source.tar.xz
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