diff --git a/appveyor.yml b/appveyor.yml
index 96b29d9b..9adb6695 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,7 +10,7 @@ configuration:
   - Release
 
 environment:
-  WX_VERSION: 3.1.3
+  WX_VERSION: 3.1.5
   LUAJIT_VERSION: 2.0.5
 
 for:
diff --git a/build-luajit.sh b/build-luajit.sh
index f8bd655c..1a68f59e 100644
--- a/build-luajit.sh
+++ b/build-luajit.sh
@@ -16,7 +16,7 @@ mkdir -p $INSTALL_PATH
 echo "Building LuaJIT version $LUAJIT_VERSION"
 
 if [[ "$OSTYPE" == "darwin"* ]]; then
-  BUILD_COMMAND="make MACOSX_DEPLOYMENT_TARGET=10.7 CC='gcc -arch x86_64'"
+  BUILD_COMMAND="make MACOSX_DEPLOYMENT_TARGET=10.10 CC='gcc -arch x86_64'"
   INSTALL_COMMAND="cp libluajit.a $INSTALL_PATH/lib/liblua51.a"
   LIBS_DIR="macosx"
 elif [[ "$OSTYPE" == "linux"* ]]; then
diff --git a/build-wxwidgets.sh b/build-wxwidgets.sh
index 62f6d961..2657b1b7 100755
--- a/build-wxwidgets.sh
+++ b/build-wxwidgets.sh
@@ -17,10 +17,11 @@ mkdir -p $INSTALL_PATH
 WX_CONFIGURE_FLAGS="\
   --disable-shared \
   --enable-compat28 \
-  --with-macosx-version-min=10.7 \
+  --with-macosx-version-min=10.10 \
   --with-libpng=builtin \
   --with-libjpeg=builtin \
   --with-libtiff=builtin \
+  --with-liblzma=builtin \
   CFLAGS=-fvisibility-inlines-hidden \
   CXXFLAGS='-fvisibility-inlines-hidden -stdlib=libc++' \
   CPPFLAGS='-fvisibility-inlines-hidden -stdlib=libc++' \
@@ -58,7 +59,6 @@ if [ ! -d "$INSTALL_PATH/lib" ]; then
   tar -xjf wxWidgets-$WX_VERSION.tar.bz2
   cd wxWidgets-$WX_VERSION
   patch -p1 -i ../wxaui-tweaks.patch
-  patch -p1 -i ../wxWidgets-osx-private-build-fix.patch
   eval $BUILD_COMMAND
 else
   echo "Using cached directory."
diff --git a/premake4.lua b/premake4.lua
index e9d957bf..e0e55102 100644
--- a/premake4.lua
+++ b/premake4.lua
@@ -56,7 +56,7 @@ solution "XWord"
 
     configuration "macosx"
         architecture "x64"
-        systemversion "10.7"
+        systemversion "10.10"
         buildoptions { "-stdlib=libc++" }
         linkoptions  { "-stdlib=libc++", "-L/usr/local/lib" }
 
diff --git a/wxWidgets-osx-private-build-fix.patch b/wxWidgets-osx-private-build-fix.patch
deleted file mode 100644
index 538c636e..00000000
--- a/wxWidgets-osx-private-build-fix.patch
+++ /dev/null
@@ -1,74 +0,0 @@
-From 294c8a6b23de686436a36f076de6a004a110a4d1 Mon Sep 17 00:00:00 2001
-From: Stefan Csomor <csomor@advancedconcepts.ch>
-Date: Tue, 5 Nov 2019 19:20:51 +0100
-Subject: [PATCH] moving datatransfer.h to source files
-
-former place in private.h broke Audacity builds
----
- include/wx/osx/private.h   | 1 -
- src/osx/carbon/clipbrd.cpp | 1 +
- src/osx/carbon/dataobj.cpp | 1 +
- src/osx/cocoa/dnd.mm       | 1 +
- src/osx/cocoa/window.mm    | 1 +
- 5 files changed, 4 insertions(+), 1 deletion(-)
-
-diff --git a/include/wx/osx/private.h b/include/wx/osx/private.h
-index a49a4166f84..23fd0025fbc 100644
---- a/include/wx/osx/private.h
-+++ b/include/wx/osx/private.h
-@@ -2,7 +2,6 @@
- #define _WX_PRIVATE_OSX_H_
- 
- #include "wx/osx/core/private.h"
--#include "wx/osx/private/datatransfer.h"
- 
- #if wxOSX_USE_IPHONE
-     #include "wx/osx/iphone/private.h"
-diff --git a/src/osx/carbon/clipbrd.cpp b/src/osx/carbon/clipbrd.cpp
-index 6012d3747ef..6c463d0d999 100644
---- a/src/osx/carbon/clipbrd.cpp
-+++ b/src/osx/carbon/clipbrd.cpp
-@@ -28,6 +28,7 @@
- #include "wx/scopedarray.h"
- 
- #include "wx/osx/private.h"
-+#include "wx/osx/private/datatransfer.h"
- 
- #define wxUSE_DATAOBJ 1
- 
-diff --git a/src/osx/carbon/dataobj.cpp b/src/osx/carbon/dataobj.cpp
-index 61e37b7e2b1..2dbf820461a 100644
---- a/src/osx/carbon/dataobj.cpp
-+++ b/src/osx/carbon/dataobj.cpp
-@@ -30,6 +30,7 @@
- #include "wx/filename.h"
- 
- #include "wx/osx/private.h"
-+#include "wx/osx/private/datatransfer.h"
- 
- static CFStringRef kUTTypeTraditionalMacText = CFSTR("com.apple.traditional-mac-plain-text");
- 
-diff --git a/src/osx/cocoa/dnd.mm b/src/osx/cocoa/dnd.mm
-index 6ff71f619de..019d2adb18d 100644
---- a/src/osx/cocoa/dnd.mm
-+++ b/src/osx/cocoa/dnd.mm
-@@ -30,6 +30,7 @@
- #include "wx/evtloop.h"
- 
- #include "wx/osx/private.h"
-+#include "wx/osx/private/datatransfer.h"
- 
- wxOSXDataSinkItem::~wxOSXDataSinkItem()
- {
-diff --git a/src/osx/cocoa/window.mm b/src/osx/cocoa/window.mm
-index 8a8a12b948f..a589187a8e0 100644
---- a/src/osx/cocoa/window.mm
-+++ b/src/osx/cocoa/window.mm
-@@ -22,6 +22,7 @@
- #ifdef __WXMAC__
-     #include "wx/osx/private.h"
-     #include "wx/osx/private/available.h"
-+    #include "wx/osx/private/datatransfer.h"
- #endif
- 
- #include "wx/evtloop.h"