diff --git a/srcpkgs/thunderbird/files/mozconfig b/srcpkgs/thunderbird/files/mozconfig
index 2a4d81bf293..dbbf6ea1c64 100644
--- a/srcpkgs/thunderbird/files/mozconfig
+++ b/srcpkgs/thunderbird/files/mozconfig
@@ -45,4 +45,5 @@ ac_add_options --enable-pie
 
 ac_add_options --enable-official-branding
 ac_add_options --enable-safe-browsing
+ac_add_options --enable-calendar
 ac_add_options --enable-application=mail
diff --git a/srcpkgs/thunderbird/template b/srcpkgs/thunderbird/template
index fd7b5992fe7..7cf2d8a5145 100644
--- a/srcpkgs/thunderbird/template
+++ b/srcpkgs/thunderbird/template
@@ -1,7 +1,7 @@
 # Template build file for 'thunderbird'.
 pkgname=thunderbird
 version=52.0.1
-revision=1
+revision=2
 short_desc="Standalone Mail/News reader"
 maintainer="Enno Boland <gottox@voidlinux.eu>"
 homepage="http://www.mozilla.org/thunderbird/"