diff --git a/CMakeLists.txt b/CMakeLists.txt
index abea2aaf4..dcf88602f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -60,7 +60,7 @@ include(cmake/options.cmake)
 
 if (NOT DESKTOP_APP_USE_PACKAGED)
     if (WIN32)
-        set(qt_version 5.15.12)
+        set(qt_version 5.15.13)
     elseif (APPLE)
         set(qt_version 6.2.7)
     endif()
diff --git a/Telegram/build/prepare/prepare.py b/Telegram/build/prepare/prepare.py
index 727e8521b..bb63f2d62 100644
--- a/Telegram/build/prepare/prepare.py
+++ b/Telegram/build/prepare/prepare.py
@@ -424,7 +424,7 @@ if customRunCommand:
 stage('patches', """
     git clone https://github.com/desktop-app/patches.git
     cd patches
-    git checkout bed08b53a3
+    git checkout cc0c2f8365
 """)
 
 stage('msys64', """
@@ -1400,21 +1400,21 @@ release:
 """)
 
 if buildQt5:
-    stage('qt_5_15_12', """
-    git clone -b v5.15.12-lts-lgpl https://github.com/qt/qt5.git qt_5_15_12
-    cd qt_5_15_12
+    stage('qt_5_15_13', """
+    git clone -b v5.15.13-lts-lgpl https://github.com/qt/qt5.git qt_5_15_13
+    cd qt_5_15_13
     perl init-repository --module-subset=qtbase,qtimageformats,qtsvg
-depends:patches/qtbase_5.15.12/*.patch
+depends:patches/qtbase_5.15.13/*.patch
     cd qtbase
 win:
-    for /r %%i in (..\\..\\patches\\qtbase_5.15.12\\*) do git apply %%i -v
+    for /r %%i in (..\\..\\patches\\qtbase_5.15.13\\*) do git apply %%i -v
     cd ..
 
     SET CONFIGURATIONS=-debug
 release:
     SET CONFIGURATIONS=-debug-and-release
 win:
-    """ + removeDir("\"%LIBS_DIR%\\Qt-5.15.12\"") + """
+    """ + removeDir("\"%LIBS_DIR%\\Qt-5.15.13\"") + """
     SET ANGLE_DIR=%LIBS_DIR%\\tg_angle
     SET ANGLE_LIBS_DIR=%ANGLE_DIR%\\out
     SET MOZJPEG_DIR=%LIBS_DIR%\\mozjpeg
@@ -1422,7 +1422,7 @@ win:
     SET OPENSSL_LIBS_DIR=%OPENSSL_DIR%\\out
     SET ZLIB_LIBS_DIR=%LIBS_DIR%\\zlib
     SET WEBP_DIR=%LIBS_DIR%\\libwebp
-    configure -prefix "%LIBS_DIR%\\Qt-5.15.12" ^
+    configure -prefix "%LIBS_DIR%\\Qt-5.15.13" ^
         %CONFIGURATIONS% ^
         -force-debug-info ^
         -opensource ^
@@ -1457,14 +1457,14 @@ win:
     jom -j16
     jom -j16 install
 mac:
-    find ../../patches/qtbase_5.15.12 -type f -print0 | sort -z | xargs -0 git apply
+    find ../../patches/qtbase_5.15.13 -type f -print0 | sort -z | xargs -0 git apply
     cd ..
 
     CONFIGURATIONS=-debug
 release:
     CONFIGURATIONS=-debug-and-release
 mac:
-    ./configure -prefix "$USED_PREFIX/Qt-5.15.12" \
+    ./configure -prefix "$USED_PREFIX/Qt-5.15.13" \
         $CONFIGURATIONS \
         -force-debug-info \
         -opensource \