diff --git a/expat/CMake.README b/expat/CMake.README
index a512a7b7..bd7c51c5 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-2.3.0 is the source directory of expat, add a subdirectory
+Assuming ~/expat-2.4.0 is the source directory of expat, add a subdirectory
 build and change into that directory:
-~/expat-2.3.0$ mkdir build && cd build
-~/expat-2.3.0/build$
+~/expat-2.4.0$ mkdir build && cd build
+~/expat-2.4.0/build$
 
 From that directory, call cmake first, then call make, make test and
 make install in the usual way:
-~/expat-2.3.0/build$ cmake ..
+~/expat-2.4.0/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-2.3.0/build
+-- Build files have been written to: /home/patrick/expat-2.4.0/build
 
 If you want to specify the install location for your files, append
 -DCMAKE_INSTALL_PREFIX=/your/install/path to the cmake call.
 
-~/expat-2.3.0/build$ make && make test && make install
+~/expat-2.4.0/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 bf48e6d1..c747f3e1 100644
--- a/expat/CMakeLists.txt
+++ b/expat/CMakeLists.txt
@@ -64,7 +64,7 @@ endif()
 
 project(expat
     VERSION
-        2.3.0
+        2.4.0
     LANGUAGES
         C
 )
diff --git a/expat/Changes b/expat/Changes
index 07b2e1a3..c9d17276 100644
--- a/expat/Changes
+++ b/expat/Changes
@@ -2,7 +2,7 @@ NOTE: We are looking for help with a few things:
       https://github.com/libexpat/libexpat/labels/help%20wanted
       If you can help, please get in touch.  Thanks!
 
-Release X.X.X XXX XXXXX XX XXXX
+Release 2.4.0 XXX XXXXX XX XXXX
         Security fixes:
    #34 #466 #484  CVE-2013-0340/CWE-776 -- Protect against billion laughs attacks
                     (denial-of-service; flavors targeting CPU time or RAM or both,
diff --git a/expat/README.md b/expat/README.md
index 9f1f8410..94e0bb14 100644
--- a/expat/README.md
+++ b/expat/README.md
@@ -5,7 +5,7 @@
 [![Downloads GitHub](https://img.shields.io/github/downloads/libexpat/libexpat/total?label=Downloads%20GitHub)](https://github.com/libexpat/libexpat/releases)
 
 
-# Expat, Release 2.3.0
+# Expat, Release 2.4.0
 
 This is Expat, a C library for parsing XML, started by
 [James Clark](https://en.wikipedia.org/wiki/James_Clark_%28programmer%29) in 1997.
diff --git a/expat/doc/reference.html b/expat/doc/reference.html
index 8e77a10c..acedcf1c 100644
--- a/expat/doc/reference.html
+++ b/expat/doc/reference.html
@@ -48,7 +48,7 @@
   <div>
     <h1>
       The Expat XML Parser
-      <small>Release 2.3.0</small>
+      <small>Release 2.4.0</small>
     </h1>
   </div>
 <div class="content">
diff --git a/expat/lib/expat.h b/expat/lib/expat.h
index 30a064ad..016c1c5f 100644
--- a/expat/lib/expat.h
+++ b/expat/lib/expat.h
@@ -1040,7 +1040,7 @@ XML_SetBillionLaughsAttackProtectionActivationThreshold(
    See http://semver.org.
 */
 #define XML_MAJOR_VERSION 2
-#define XML_MINOR_VERSION 3
+#define XML_MINOR_VERSION 4
 #define XML_MICRO_VERSION 0
 
 #ifdef __cplusplus
diff --git a/expat/lib/xmlparse.c b/expat/lib/xmlparse.c
index 6a59342c..214c93fd 100644
--- a/expat/lib/xmlparse.c
+++ b/expat/lib/xmlparse.c
@@ -1,4 +1,4 @@
-/* d667b5f8e56e24fdfaf5e38596d419d924a9fadceb987d81d5613ecb7ca51b0e (2.3.0+)
+/* 40f0f9c2be99a31dd0c833cd7d5a1bbd825a95e241f6e6c689b69ce275aba9a9 (2.4.0+)
                             __  __            _
                          ___\ \/ /_ __   __ _| |_
                         / _ \\  /| '_ \ / _` | __|
diff --git a/expat/tests/runtests.c b/expat/tests/runtests.c
index e3944561..8cee7ee8 100644
--- a/expat/tests/runtests.c
+++ b/expat/tests/runtests.c
@@ -7351,7 +7351,7 @@ START_TEST(test_misc_version) {
     fail("Version mismatch");
 
 #if ! defined(XML_UNICODE) || defined(XML_UNICODE_WCHAR_T)
-  if (xcstrcmp(version_text, XCS("expat_2.3.0"))) /* needs bump on releases */
+  if (xcstrcmp(version_text, XCS("expat_2.4.0"))) /* needs bump on releases */
     fail("XML_*_VERSION in expat.h out of sync?\n");
 #else
   /* If we have XML_UNICODE defined but not XML_UNICODE_WCHAR_T
diff --git a/expat/win32/expat.iss b/expat/win32/expat.iss
index 2f25a501..4d37cd24 100644
--- a/expat/win32/expat.iss
+++ b/expat/win32/expat.iss
@@ -36,7 +36,7 @@
 ; OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
 ; USE OR OTHER DEALINGS IN THE SOFTWARE.
 
-#define expatVer "2.3.0"
+#define expatVer "2.4.0"
 
 [Setup]
 AppName=Expat