diff --git a/srcpkgs/marble5/patches/soversion.diff b/srcpkgs/marble5/patches/soversion.diff
index 378a128311..90fe8e0e6a 100644
--- a/srcpkgs/marble5/patches/soversion.diff
+++ b/srcpkgs/marble5/patches/soversion.diff
@@ -1,14 +1,14 @@
 --- a/src/lib/astro/CMakeLists.txt	2018-01-10 08:43:24.000000000 +0100
 +++ b/src/lib/astro/CMakeLists.txt	2018-02-10 15:08:03.545093856 +0100
 @@ -6,7 +6,7 @@
- )
- 
- set(ASTRO_LIB_VERSION "0.17.20")
--set(ASTRO_LIB_SOVERSION "1")
-+set(ASTRO_LIB_SOVERSION "2")
- 
- ADD_DEFINITIONS(-O3)
- 
+ set(ASTRO_LIB_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})
+ set(ASTRO_LIB_VERSION_MINOR ${PROJECT_VERSION_MINOR})
+ set(ASTRO_LIB_VERSION_PATCH ${PROJECT_VERSION_PATCH})
+-set(ASTRO_LIB_SOVERSION 1)
++set(ASTRO_LIB_SOVERSION 2)
+ set(HEADER_PREFIX ASTRO_LIB)
+ configure_file("${marble_SOURCE_DIR}/cmake/templates/versionheader.h.in" "${CMAKE_CURRENT_BINARY_DIR}/astro_version.h")
+ include(CMakePackageConfigHelpers)
 --- a/src/lib/marble/declarative/CMakeLists.txt	2018-01-10 08:43:24.000000000 +0100
 +++ b/src/lib/marble/declarative/CMakeLists.txt	2018-02-10 15:08:55.007096153 +0100
 @@ -30,6 +30,10 @@
diff --git a/srcpkgs/marble5/template b/srcpkgs/marble5/template
index 8b0206e425..fa5d852fa1 100644
--- a/srcpkgs/marble5/template
+++ b/srcpkgs/marble5/template
@@ -1,6 +1,6 @@
 # Template file for 'marble5'
 pkgname=marble5
-version=21.08.3
+version=21.12.0
 revision=1
 wrksrc="marble-${version}"
 build_style=cmake
@@ -16,7 +16,7 @@ license="LGPL-2.1-or-later, GFDL-1.2-only"
 homepage="https://marble.kde.org"
 changelog="https://kde.org/announcements/changelogs/gear/${version}/#marble"
 distfiles="${KDE_SITE}/release-service/${version}/src/marble-${version}.tar.xz"
-checksum=0a285852438ab4cf0205c74fc4082cef742f16ce4b84f68aae30822e6ab5572d
+checksum=bc66e9e80480bd281ffbc9263139806349316bbd8eea9baaa59b008aa6d901b0
 
 pre_configure() {
 	vsed -i CMakeLists.txt -e 's/-Wcast-align//'