diff --git a/buildozer/aversion b/buildozer/aversion
index 9e2741186..a0de048af 100755
--- a/buildozer/aversion
+++ b/buildozer/aversion
@@ -9,7 +9,7 @@ else
 fi
 
 # current android version mumber.
-version="3.1.1"
+version="3.1.2"
 sversion=$(echo $version  | sed -E "s:(.*)\..*:\1:")
 tuple=$(echo $version | sed -E "s:(.*)\.(.*)\.(.*):(\1, \2, \3):")
 
diff --git a/buildozer/pubspec.json b/buildozer/pubspec.json
index 5a9d1404c..50c950da7 100644
--- a/buildozer/pubspec.json
+++ b/buildozer/pubspec.json
@@ -11,8 +11,8 @@
       "type": "SINGLE",
       "filters": [],
       "attributes": [],
-      "versionCode": 102130101,
-      "versionName": "3.1.1",
+      "versionCode": 102130102,
+      "versionName": "3.1.2",
       "outputFile": "pysolfc-release.apk"
     }
   ],
diff --git a/fastlane/metadata/android/en-US/changelogs/102130102.txt b/fastlane/metadata/android/en-US/changelogs/102130102.txt
new file mode 100644
index 000000000..a308b95f8
--- /dev/null
+++ b/fastlane/metadata/android/en-US/changelogs/102130102.txt
@@ -0,0 +1,3 @@
+
+- added a tools menu entry to adjust font size.
+- bug fixes.
diff --git a/locale/de/LC_MESSAGES/pysol.mo b/locale/de/LC_MESSAGES/pysol.mo
index cfc17ba11..34c31da5a 100644
Binary files a/locale/de/LC_MESSAGES/pysol.mo and b/locale/de/LC_MESSAGES/pysol.mo differ
diff --git a/po/de_pysol.po b/po/de_pysol.po
index 20d3aa444..f4edb0c1e 100644
--- a/po/de_pysol.po
+++ b/po/de_pysol.po
@@ -2549,7 +2549,7 @@ msgstr "Hinweise"
 
 #: pysollib/kivy/menubar.py:202 pysollib/kivy/menubar.py:1663
 msgid "Options"
-msgstr "Optionen"
+msgstr "Einstellungen"
 
 #: pysollib/kivy/menubar.py:207 pysollib/kivy/menubar.py:321
 #: pysollib/kivy/menubar.py:1671
@@ -3013,16 +3013,16 @@ msgid "Right"
 msgstr "Rechts"
 
 msgid "Other graphics"
-msgstr ""
+msgstr "Graphik Varianten"
 
 msgid "Demo logo"
-msgstr ""
+msgstr "Demo Logo"
 
 msgid "Pause text"
-msgstr ""
+msgstr "Pause Text"
 
 msgid "Redeal icons"
-msgstr ""
+msgstr "Redeal Icons"
 
 #: pysollib/kivy/menubar.py:1062
 msgid "Startup splash screen"
@@ -3038,7 +3038,7 @@ msgstr "Inhalt"
 
 #: pysollib/kivy/menubar.py:1094
 msgid "How to use PySol"
-msgstr ""
+msgstr "Bedienung"
 
 #: pysollib/kivy/menubar.py:1098 pysollib/kivy/toolbar.py:204
 #: pysollib/tile/toolbar.py:189 pysollib/tk/toolbar.py:189