Index: head/math/wxmaxima/Makefile
===================================================================
--- head/math/wxmaxima/Makefile
+++ head/math/wxmaxima/Makefile
@@ -2,8 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	wxmaxima
-PORTVERSION=	20.03.1
-PORTREVISION=	1
+PORTVERSION=	20.04.0
 DISTVERSIONPREFIX=	Version-
 CATEGORIES=	math
 
@@ -26,8 +25,11 @@
 
 PORTDATA=	COPYING README README.md
 
-OPTIONS_DEFINE=	NLS
+OPTIONS_DEFINE=	GERMAN NLS
 OPTIONS_SUB=	yes
+
+GERMAN_DESC=	Install German manual page
+GERMAN_EXTRA_PATCHES_OFF=	${PATCHDIR}/extra-patch-data_CMakeLists.txt
 
 NLS_EXTRA_PATCHES_OFF=	${PATCHDIR}/extra-patch-CMakeLists.txt
 NLS_USES=	gettext
Index: head/math/wxmaxima/distinfo
===================================================================
--- head/math/wxmaxima/distinfo
+++ head/math/wxmaxima/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1584269156
-SHA256 (wxMaxima-Developers-wxmaxima-Version-20.03.1_GH0.tar.gz) = 2a06fdf235276cf30c1fc5a64b0e0965e5bd843610d4dc599bf7c63c0ea985bb
-SIZE (wxMaxima-Developers-wxmaxima-Version-20.03.1_GH0.tar.gz) = 15343877
+TIMESTAMP = 1587205454
+SHA256 (wxMaxima-Developers-wxmaxima-Version-20.04.0_GH0.tar.gz) = ce65b461bd0dde1dbc8d61d3d4104f95c1122e3a77620239d469ff317ba1e5a7
+SIZE (wxMaxima-Developers-wxmaxima-Version-20.04.0_GH0.tar.gz) = 15313618
Index: head/math/wxmaxima/files/extra-patch-data_CMakeLists.txt
===================================================================
--- /dev/null
+++ head/math/wxmaxima/files/extra-patch-data_CMakeLists.txt
@@ -0,0 +1,14 @@
+--- data/CMakeLists.txt.orig	2020-04-19 11:36:36 UTC
++++ data/CMakeLists.txt
+@@ -28,11 +28,9 @@ else()
+         set(WXMAXIMA_CONFIGFILE_PATH "~/.wxMaxima")
+     endif()
+     configure_file(${CMAKE_CURRENT_SOURCE_DIR}/wxmaxima.1.in ${CMAKE_CURRENT_BINARY_DIR}/wxmaxima.1)
+-    configure_file(${CMAKE_CURRENT_SOURCE_DIR}/de/wxmaxima.1.in ${CMAKE_CURRENT_BINARY_DIR}/de/wxmaxima.1)
+     install(FILES ${PIXMAPS}                                                                     DESTINATION share/pixmaps)
+     install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/wxmaxima                                           DESTINATION share/bash-completion/completions)
+     install(FILES ${CMAKE_CURRENT_BINARY_DIR}/wxmaxima.1                                         DESTINATION share/man/man1)
+-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/de/wxmaxima.1                                      DESTINATION share/man/de/man1)
+     install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/io.github.wxmaxima_developers.wxMaxima.appdata.xml DESTINATION share/metainfo)
+     install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/io.github.wxmaxima_developers.wxMaxima.desktop     DESTINATION share/applications)
+     install(FILES ${CMAKE_CURRENT_SOURCE_DIR}/x-wxmathml.xml                                     DESTINATION share/mime/packages)
Index: head/math/wxmaxima/pkg-plist
===================================================================
--- head/math/wxmaxima/pkg-plist
+++ head/math/wxmaxima/pkg-plist
@@ -2,22 +2,18 @@
 %%DESKTOPDIR%%/io.github.wxmaxima_developers.wxMaxima.desktop
 %%DOCSDIR%%/Autocomplete1.jpg
 %%DOCSDIR%%/Autocomplete2.jpg
-%%DOCSDIR%%/BatchImage.jpg
 %%DOCSDIR%%/BatchImage.png
 %%DOCSDIR%%/MatrixTableExample.png
 %%DOCSDIR%%/SecondTableExample.png
-%%DOCSDIR%%/ezUnits.jpg
 %%DOCSDIR%%/ezUnits.png
 %%DOCSDIR%%/maxima_screenshot.png
 %%DOCSDIR%%/sbclMemory.png
-%%DOCSDIR%%/wxMaximaLogo.jpg
 %%DOCSDIR%%/wxMaximaLogo.png
-%%DOCSDIR%%/wxMaxima_configuration_001.jpg
 %%DOCSDIR%%/wxMaxima_configuration_001.png
-%%DOCSDIR%%/wxMaxima_configuration_002.jpg
 %%DOCSDIR%%/wxMaxima_configuration_002.png
 %%DOCSDIR%%/wxmaxima.html
 share/bash-completion/completions/wxmaxima
+%%GERMAN%%share/man/de/man1/wxmaxima.1.gz
 share/man/man1/wxmaxima.1.gz
 share/metainfo/io.github.wxmaxima_developers.wxMaxima.appdata.xml
 %%NLS%%share/locale/ca/LC_MESSAGES/wxMaxima.mo