diff --git a/package/qt6/qt6.mk b/package/qt6/qt6.mk
index 431bb8c9d3..1edb252c96 100644
--- a/package/qt6/qt6.mk
+++ b/package/qt6/qt6.mk
@@ -5,7 +5,7 @@
 ################################################################################
 
 QT6_VERSION_MAJOR = 6.4
-QT6_VERSION = $(QT6_VERSION_MAJOR).2
+QT6_VERSION = $(QT6_VERSION_MAJOR).3
 QT6_SOURCE_TARBALL_PREFIX = everywhere-src
 QT6_SITE = https://download.qt.io/archive/qt/$(QT6_VERSION_MAJOR)/$(QT6_VERSION)/submodules
 
diff --git a/package/qt6/qt6base/qt6base.hash b/package/qt6/qt6base/qt6base.hash
index 63af373836..cb111bd405 100644
--- a/package/qt6/qt6base/qt6base.hash
+++ b/package/qt6/qt6base/qt6base.hash
@@ -1,5 +1,5 @@
-# Hash from: https://download.qt.io/official_releases/qt/6.4/6.4.2/submodules/qtbase-everywhere-src-6.4.2.tar.xz.sha256
-sha256  a88bc6cedbb34878a49a622baa79cace78cfbad4f95fdbd3656ddb21c705525d  qtbase-everywhere-src-6.4.2.tar.xz
+# Hash from: https://download.qt.io/official_releases/qt/6.4/6.4.3/submodules/qtbase-everywhere-src-6.4.3.tar.xz.sha256
+sha256  5087c9e5b0165e7bc3c1a4ab176b35d0cd8f52636aea903fa377bdba00891a60  qtbase-everywhere-src-6.4.3.tar.xz
 
 # Hashes for license files
 sha256  e3ba223bb1423f0aad8c3dfce0fe3148db48926d41e6fbc3afbbf5ff9e1c89cb  LICENSES/Apache-2.0.txt
diff --git a/package/qt6/qt6serialbus/qt6serialbus.hash b/package/qt6/qt6serialbus/qt6serialbus.hash
index be01f13363..98c8931962 100644
--- a/package/qt6/qt6serialbus/qt6serialbus.hash
+++ b/package/qt6/qt6serialbus/qt6serialbus.hash
@@ -1,5 +1,5 @@
-# Hash from: https://download.qt.io/official_releases/qt/6.4/6.4.2/submodules/qtserialbus-everywhere-src-6.4.2.tar.xz.sha256
-sha256  604013657c7327899aa50748deb4bcb5e545ab37ff4964795b9e6f617d48bf1b  qtserialbus-everywhere-src-6.4.2.tar.xz
+# Hash from: https://download.qt.io/official_releases/qt/6.4/6.4.3/submodules/qtserialbus-everywhere-src-6.4.3.tar.xz.sha256
+sha256  b6446a7516d1f04e561c00f9c50ce4d39dad72150f067722ba759f00b4b34366  qtserialbus-everywhere-src-6.4.3.tar.xz
 
 # Hashes for license files:
 sha256  9f0490f18656c6f2435bd14f603ef0c96434d1825615363dce43abb42ed1dcce  LICENSES/BSD-3-Clause.txt
diff --git a/package/qt6/qt6serialport/qt6serialport.hash b/package/qt6/qt6serialport/qt6serialport.hash
index 1eaa3d6150..9341978d86 100644
--- a/package/qt6/qt6serialport/qt6serialport.hash
+++ b/package/qt6/qt6serialport/qt6serialport.hash
@@ -1,5 +1,5 @@
-# Hash from: https://download.qt.io/official_releases/qt/6.4/6.4.2/submodules/qtserialport-everywhere-src-6.4.2.tar.xz.sha256
-sha256  336d95919037800184b3c3de8ccb6f62954b20f3756c05adce8d5010504340fa  qtserialport-everywhere-src-6.4.2.tar.xz
+# Hash from: https://download.qt.io/official_releases/qt/6.4/6.4.3/submodules/qtserialport-everywhere-src-6.4.3.tar.xz.sha256
+sha256  5f97ad9067efa39a8a2a39fbbc1e03d2191f305733d9c2f3060f8017ecfc95de  qtserialport-everywhere-src-6.4.3.tar.xz
 
 # Hashes for license files:
 sha256  9f0490f18656c6f2435bd14f603ef0c96434d1825615363dce43abb42ed1dcce  LICENSES/BSD-3-Clause.txt