diff --git a/expat/CMake.README b/expat/CMake.README
index 3998f4ea..6e7e852f 100644
--- a/expat/CMake.README
+++ b/expat/CMake.README
@@ -3,25 +3,25 @@
 The cmake based buildsystem for expat works on Windows (cygwin, mingw, Visual
 Studio) and should work on all other platform cmake supports.
 
-Assuming ~/expat-2.6.2 is the source directory of expat, add a subdirectory
+Assuming ~/expat-2.6.3 is the source directory of expat, add a subdirectory
 build and change into that directory:
-~/expat-2.6.2$ mkdir build && cd build
-~/expat-2.6.2/build$
+~/expat-2.6.3$ mkdir build && cd build
+~/expat-2.6.3/build$
 
 From that directory, call cmake first, then call make, make test and
 make install in the usual way:
-~/expat-2.6.2/build$ cmake ..
+~/expat-2.6.3/build$ cmake ..
 -- The C compiler identification is GNU
 -- The CXX compiler identification is GNU
 ....
 -- Configuring done
 -- Generating done
--- Build files have been written to: /home/patrick/expat-2.6.2/build
+-- Build files have been written to: /home/patrick/expat-2.6.3/build
 
 If you want to specify the install location for your files, append
 -DCMAKE_INSTALL_PREFIX=/your/install/path to the cmake call.
 
-~/expat-2.6.2/build$ make && make test && make install
+~/expat-2.6.3/build$ make && make test && make install
 Scanning dependencies of target expat
 [  5%] Building C object CMakeFiles/expat.dir/lib/xmlparse.c.o
 [ 11%] Building C object CMakeFiles/expat.dir/lib/xmlrole.c.o
diff --git a/expat/CMakeLists.txt b/expat/CMakeLists.txt
index 5bdc832d..b2055c18 100644
--- a/expat/CMakeLists.txt
+++ b/expat/CMakeLists.txt
@@ -38,7 +38,7 @@ cmake_minimum_required(VERSION 3.5.0)
 
 project(expat
     VERSION
-        2.6.2
+        2.6.3
     LANGUAGES
         C
 )
diff --git a/expat/README.md b/expat/README.md
index b7b16f13..180a68e4 100644
--- a/expat/README.md
+++ b/expat/README.md
@@ -11,7 +11,7 @@
 > at the top of the `Changes` file.
 
 
-# Expat, Release 2.6.2
+# Expat, Release 2.6.3
 
 This is Expat, a C99 library for parsing
 [XML 1.0 Fourth Edition](https://www.w3.org/TR/2006/REC-xml-20060816/), started by
diff --git a/expat/doc/reference.html b/expat/doc/reference.html
index c600fbba..4cfb2ce9 100644
--- a/expat/doc/reference.html
+++ b/expat/doc/reference.html
@@ -52,7 +52,7 @@
   <div>
     <h1>
       The Expat XML Parser
-      <small>Release 2.6.2</small>
+      <small>Release 2.6.3</small>
     </h1>
   </div>
 <div class="content">
diff --git a/expat/lib/expat.h b/expat/lib/expat.h
index c2770be3..d0d6015a 100644
--- a/expat/lib/expat.h
+++ b/expat/lib/expat.h
@@ -1066,7 +1066,7 @@ XML_SetReparseDeferralEnabled(XML_Parser parser, XML_Bool enabled);
 */
 #define XML_MAJOR_VERSION 2
 #define XML_MINOR_VERSION 6
-#define XML_MICRO_VERSION 2
+#define XML_MICRO_VERSION 3
 
 #ifdef __cplusplus
 }
diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index 0f32e1f8..b92a5cf5 100644
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -1,4 +1,4 @@
-/* 2a14271ad4d35e82bde8ba210b4edb7998794bcbae54deab114046a300f9639a (2.6.2+)
+/* ba4cdf9bdb534f355a9def4c9e25d20ee8e72f95b0a4d930be52e563f5080196 (2.6.3+)
                             __  __            _
                          ___\ \/ /_ __   __ _| |_
                         / _ \\  /| '_ \ / _` | __|
diff --git a/expat/tests/misc_tests.c b/expat/tests/misc_tests.c
index ffde0563..2ee9320b 100644
--- a/expat/tests/misc_tests.c
+++ b/expat/tests/misc_tests.c
@@ -208,7 +208,7 @@ START_TEST(test_misc_version) {
   if (! versions_equal(&read_version, &parsed_version))
     fail("Version mismatch");
 
-  if (xcstrcmp(version_text, XCS("expat_2.6.2"))) /* needs bump on releases */
+  if (xcstrcmp(version_text, XCS("expat_2.6.3"))) /* needs bump on releases */
     fail("XML_*_VERSION in expat.h out of sync?\n");
 }
 END_TEST
diff --git a/expat/win32/expat.iss b/expat/win32/expat.iss
index 2c9e9215..8c44821f 100644
--- a/expat/win32/expat.iss
+++ b/expat/win32/expat.iss
@@ -37,7 +37,7 @@
 ; OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 ; USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#define expatVer "2.6.2"
+#define expatVer "2.6.3"
 
 [Setup]
 AppName=Expat