diff --git a/appveyor.yml b/appveyor.yml
index f1691dd4..f6723e1b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -51,58 +51,6 @@ configuration: Debug
 # https://cmake.org/cmake/help/latest/manual/cmake-generators.7.html#visual-studio-generators
 environment:
   matrix:
-    # Visual Studio 2013 Win32
-    - GENERATOR: Visual Studio 12 2013
-      PLATFORM: Win32
-      EXPAT_DLL: libexpatd.dll
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-
-    # Visual Studio 2013 Win32 XML_UNICODE_WCHAR_T
-    - GENERATOR: Visual Studio 12 2013
-      PLATFORM: Win32
-      CMAKE_ARGS: -DEXPAT_CHAR_TYPE=wchar_t
-      EXPAT_DLL: libexpatwd.dll
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-
-    # Visual Studio 2013 x64
-    - GENERATOR: Visual Studio 12 2013 Win64
-      PLATFORM: x64
-      EXPAT_DLL: libexpatd.dll
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-
-    # Visual Studio 2013 x64 XML_UNICODE_WCHAR_T
-    - GENERATOR: Visual Studio 12 2013 Win64
-      PLATFORM: x64
-      CMAKE_ARGS: -DEXPAT_CHAR_TYPE=wchar_t
-      EXPAT_DLL: libexpatwd.dll
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2013
-
-    # Visual Studio 2015 Win32
-    - GENERATOR: Visual Studio 14 2015
-      PLATFORM: Win32
-      EXPAT_DLL: libexpatd.dll
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-
-    # Visual Studio 2015 Win32 XML_UNICODE_WCHAR_T
-    - GENERATOR: Visual Studio 14 2015
-      PLATFORM: Win32
-      CMAKE_ARGS: -DEXPAT_CHAR_TYPE=wchar_t
-      EXPAT_DLL: libexpatwd.dll
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-
-    # Visual Studio 2015 x64
-    - GENERATOR: Visual Studio 14 2015 Win64
-      PLATFORM: x64
-      EXPAT_DLL: libexpatd.dll
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-
-    # Visual Studio 2015 x64 XML_UNICODE_WCHAR_T
-    - GENERATOR: Visual Studio 14 2015 Win64
-      PLATFORM: x64
-      CMAKE_ARGS: -DEXPAT_CHAR_TYPE=wchar_t
-      EXPAT_DLL: libexpatwd.dll
-      APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2015
-
     # Visual Studio 2017 Win32
     - GENERATOR: Visual Studio 15 2017
       PLATFORM: Win32
diff --git a/expat/CMakeLists.txt b/expat/CMakeLists.txt
index 241bab04..d6c1618d 100644
--- a/expat/CMakeLists.txt
+++ b/expat/CMakeLists.txt
@@ -130,10 +130,10 @@ if(EXPAT_WITH_LIBBSD)
 endif()
 
 if(MSVC)
-    # Minimum supported MSVC version is 1800 = Visual Studio 12.0/2013
+    # Minimum supported MSVC version is 1910 = Visual Studio 15.0/2017
     # See also https://cmake.org/cmake/help/latest/variable/MSVC_VERSION.html
-    if(MSVC_VERSION VERSION_LESS 1800)
-        message(SEND_ERROR "MSVC_VERSION ${MSVC_VERSION} is not a supported Visual Studio compiler version. Please use Visual Studio 2013 or any later version.")
+    if(MSVC_VERSION VERSION_LESS 1910)
+        message(SEND_ERROR "MSVC_VERSION ${MSVC_VERSION} is not a supported Visual Studio compiler version. Please use Visual Studio 15.0/2017 or any later version.")
     endif()
 endif()
 
diff --git a/expat/Changes b/expat/Changes
index a79d5368..e9b072c7 100644
--- a/expat/Changes
+++ b/expat/Changes
@@ -15,7 +15,7 @@ Release x.x.xx xxx xxxxxxx xx xxxx
             #439  xmlwf: Add argument -k to allow continuing after
                     non-fatal errors
             #439  xmlwf: Add section about exit status to the -h help output
-            #422  Windows: Drop support for Visual Studio <=11.0/2012
+       #422 #447  Windows: Drop support for Visual Studio <=14.0/2015
        #382 #428  testrunner: Make verbose mode (argument "-v") report
                     about passed tests, and make default mode report about
                     failures, as well.
diff --git a/expat/README.md b/expat/README.md
index dd46ce0a..7547cd42 100644
--- a/expat/README.md
+++ b/expat/README.md
@@ -16,7 +16,7 @@ structures for which you may register handlers.
 Expat supports the following compilers:
 - GNU GCC >=4.5
 - LLVM Clang >=3.5
-- Microsoft Visual Studio >=12.0/2013
+- Microsoft Visual Studio >=15.0/2017 (rolling `${today} minus 5 years`)
 
 Windows users can use the
 [`expat_win32` package](https://sourceforge.net/projects/expat/files/expat_win32/),