diff --git a/expat/expat b/expat/expat
index a28238b..57c7da6 160000
--- a/expat/expat
+++ b/expat/expat
@@ -1 +1 @@
-Subproject commit a28238bdeebc087071777001245df1876a11f5ee
+Subproject commit 57c7da69b78e3698e112a6b5da19d5109b8232d1
diff --git a/expat/idf_component.yml b/expat/idf_component.yml
index b217ed1..567c266 100644
--- a/expat/idf_component.yml
+++ b/expat/idf_component.yml
@@ -1,4 +1,4 @@
-version: "2.4.1"
+version: "2.4.3"
 description: "Expat - XML Parsing C Library"
 url: https://github.com/espressif/idf-extra-components/tree/master/expat
 dependencies:
diff --git a/expat/port/include/expat_config.h b/expat/port/include/expat_config.h
index b1ba025..4689102 100644
--- a/expat/port/include/expat_config.h
+++ b/expat/port/include/expat_config.h
@@ -63,7 +63,7 @@
 #define PACKAGE_NAME "expat"
 
 /* Define to the full name and version of this package. */
-#define PACKAGE_STRING "expat 2.4.1"
+#define PACKAGE_STRING "expat 2.4.3"
 
 /* Define to the one symbol short name of this package. */
 #define PACKAGE_TARNAME "expat"
@@ -72,13 +72,13 @@
 #define PACKAGE_URL ""
 
 /* Define to the version of this package. */
-#define PACKAGE_VERSION "2.4.1"
+#define PACKAGE_VERSION "2.4.3"
 
 /* Define to 1 if you have the ANSI C header files. */
 #define STDC_HEADERS 1
 
 /* Version number of package */
-#define VERSION "2.4.1"
+#define VERSION "2.4.3"
 
 /* whether byteorder is bigendian */
 /* #undef WORDS_BIGENDIAN */