diff --git a/_service b/_service
index 5a13a69..bd89074 100644
--- a/_service
+++ b/_service
@@ -4,7 +4,7 @@
 		<param name="scm">git</param>
 		<param name="url">https://github.com/grommunio/gromox</param>
 		<param name="revision">master</param>
-		<param name="parent-tag">gromox-1.8</param>
+		<param name="parent-tag">gromox-1.10</param>
 		<param name="versionformat">@PARENT_TAG@.@TAG_OFFSET@.%h</param>
 		<param name="versionrewrite-pattern">gromox-?(.*)</param>
 	</service>
diff --git a/debian.changelog b/debian.changelog
index 4449c32..8600499 100644
--- a/debian.changelog
+++ b/debian.changelog
@@ -1,4 +1,4 @@
-gromox (1.8.0.1550bb02-0) unstable; urgency=low
+gromox (1.10.0.7c5fc88b-0) unstable; urgency=low
 
   * Initial package.
 
diff --git a/gromox-1.10.0.7c5fc88b.tar.xz b/gromox-1.10.0.7c5fc88b.tar.xz
new file mode 100644
index 0000000..34d9230
--- /dev/null
+++ b/gromox-1.10.0.7c5fc88b.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:6d9e0c5c4378a56dd0deaa25bb33102f6e897594fd76754f9516db6adc2ac800
+size 1004608
diff --git a/gromox-1.8.0.1550bb02.tar.xz b/gromox-1.8.0.1550bb02.tar.xz
deleted file mode 100644
index 2226602..0000000
--- a/gromox-1.8.0.1550bb02.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:e163c83cee5046afb9059139aa9af1cddb92579d34779a7abb094cb805e2c8aa
-size 1001336
diff --git a/gromox.changes b/gromox.changes
index b9526d0..11a9e96 100644
--- a/gromox.changes
+++ b/gromox.changes
@@ -1,3 +1,17 @@
+-------------------------------------------------------------------
+Tue Dec  7 18:00:46 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 1.10
+  * exmdb_provider: cease adding a broken recipient when deleting
+    last recipient
+  * exmdb_provider: synthesize mandatory recipient properties
+    essential for MSMAPI (the source of incomplete recipients is
+    from imported KGWC databases)
+  * emsmdb: work around Outlook not displaying any body in Cached
+    Mode when there is no HTML body
+  * mapi_lib: avoid making underscores in subjects when there are
+    umlauts
+
 -------------------------------------------------------------------
 Fri Oct  8 19:36:00 UTC 2021 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/gromox.dsc b/gromox.dsc
index 580511e..d335ac9 100644
--- a/gromox.dsc
+++ b/gromox.dsc
@@ -1,7 +1,7 @@
 Format: 1.0
 Source: gromox
 Architecture: any
-Version: 1.8.0.1550bb02
+Version: 1.10.0.7c5fc88b
 DEBTRANSFORM-RELEASE: 1
 Maintainer: Gromox <null@gromox.com>
 Homepage: https://gromox.com
diff --git a/gromox.spec b/gromox.spec
index e993530..f914b06 100644
--- a/gromox.spec
+++ b/gromox.spec
@@ -3,7 +3,7 @@
 %define _libexecdir %_prefix/libexec
 
 Name:           gromox
-Version:        1.8.0.1550bb02
+Version:        1.10.0.7c5fc88b
 Release:        0
 Summary:        Groupware server backend with RPC, IMAP,POP3, PHP-MAPI support
 License:        AGPL-3.0-or-later AND GPL-2.0-only AND GPL-3.0-or-later