diff --git a/_servicedata b/_servicedata
index 7581037..8043713 100644
--- a/_servicedata
+++ b/_servicedata
@@ -1,4 +1,4 @@
 <servicedata>
 <service name="tar_scm">
                 <param name="url">https://invent.kde.org/qt/qt/qtbase.git</param>
-              <param name="changesrevision">366350c2e4a7eccbda0f3936e69c6b9c4fa28f55</param></service></servicedata>
\ No newline at end of file
+              <param name="changesrevision">75c0053006d05c930749652dfb0120c5a78689de</param></service></servicedata>
\ No newline at end of file
diff --git a/libqt5-qtbase.changes b/libqt5-qtbase.changes
index 45d620d..a8a8c3a 100644
--- a/libqt5-qtbase.changes
+++ b/libqt5-qtbase.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Fri Jul 01 10:37:16 UTC 2022 - Fabian Vogt <fabian@ritter-vogt.de>
+
+- Update to version 5.15.5+kde166:
+  * Drop call to setPlatformScreen in QHighDpiScaling::setScreenFactor
+    (kde#450443)
+
 -------------------------------------------------------------------
 Mon Jun 27 12:10:11 UTC 2022 - Fabian Vogt <fabian@ritter-vogt.de>
 
diff --git a/libqt5-qtbase.spec b/libqt5-qtbase.spec
index dcdb26f..94245a0 100644
--- a/libqt5-qtbase.spec
+++ b/libqt5-qtbase.spec
@@ -29,7 +29,7 @@
 %bcond_without harfbuzz
 
 Name:           libqt5-qtbase
-Version:        5.15.5+kde165
+Version:        5.15.5+kde166
 Release:        0
 Summary:        C++ Program Library, Core Components
 License:        LGPL-3.0-only or GPL-3.0-with-Qt-Company-Qt-exception-1.1
diff --git a/qtbase-everywhere-src-5.15.5+kde165.obscpio b/qtbase-everywhere-src-5.15.5+kde165.obscpio
deleted file mode 100644
index 1d97237..0000000
--- a/qtbase-everywhere-src-5.15.5+kde165.obscpio
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:3f3a0c512b69ba13c1c00839ab3a946f55bff68ab9bac36b58f4377b802994ea
-size 292264974
diff --git a/qtbase-everywhere-src-5.15.5+kde166.obscpio b/qtbase-everywhere-src-5.15.5+kde166.obscpio
new file mode 100644
index 0000000..7d7b640
--- /dev/null
+++ b/qtbase-everywhere-src-5.15.5+kde166.obscpio
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:0f7d78fc74637ff423f220922d7ef22f3837b77941d8702eab6badad4a5815c5
+size 292265486
diff --git a/qtbase-everywhere-src.obsinfo b/qtbase-everywhere-src.obsinfo
index 3f950bc..31cb8c7 100644
--- a/qtbase-everywhere-src.obsinfo
+++ b/qtbase-everywhere-src.obsinfo
@@ -1,4 +1,4 @@
 name: qtbase-everywhere-src
-version: 5.15.5+kde165
-mtime: 1655895493
-commit: 6d3d164bec17876f5b24ae9102767ef1236aa37b
+version: 5.15.5+kde166
+mtime: 1656519067
+commit: 75c0053006d05c930749652dfb0120c5a78689de