diff --git a/tdesktop-0.9.51.tar.gz b/tdesktop-0.9.51.tar.gz
deleted file mode 100644
index ff085fa..0000000
--- a/tdesktop-0.9.51.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:246c321c009f7eeb3b616503b19c270688a790bf691feac838b3d91bfd51c55b
-size 11482866
diff --git a/tdesktop-0.9.56.tar.gz b/tdesktop-0.9.56.tar.gz
new file mode 100644
index 0000000..9a19d87
--- /dev/null
+++ b/tdesktop-0.9.56.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:69ed7364e87f8f24d6f68ddc0a5b98dfd5dae74ecc93e456cede9e65878ef404
+size 11472682
diff --git a/telegram-desktop.changes b/telegram-desktop.changes
index e710b0a..e7fba75 100644
--- a/telegram-desktop.changes
+++ b/telegram-desktop.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Mon Jul  4 19:36:46 UTC 2016 - i@xuzhao.net
+
+- Upgrade to 0.9.56
+- Fixed photo viewer to handle screen resolution change correctly.
+- Fixed forwarding photos via drag-n-drop.
+- Various design improvements and other bug fixes.
+
 -------------------------------------------------------------------
 Mon May 16 17:40:37 UTC 2016 - i@xuzhao.net
 
diff --git a/telegram-desktop.spec b/telegram-desktop.spec
index c0cc270..2db91b3 100644
--- a/telegram-desktop.spec
+++ b/telegram-desktop.spec
@@ -1,6 +1,6 @@
 Name: telegram-desktop
 Summary: A new era of messaging
-Version: 0.9.51
+Version: 0.9.56
 Release: 1
 License: GPL-3.0
 URL: https://github.com/telegramdesktop/tdesktop
@@ -64,6 +64,7 @@ sed -i 's/CUSTOM_API_ID//g' "./Telegram/Telegram.pro"
 sed -i 's,LIBS += /usr/local/lib/libxkbcommon.a,,g' "./Telegram/Telegram.pro"
 sed -i 's,LIBS += /usr/local/lib/libz.a,LIBS += -lz,g' "./Telegram/Telegram.pro"
 sed -i 's,<unity/unity/unity\.h>,"unity.h",g' "./Telegram/SourceFiles/pspecific_linux.cpp"
+sed -i 's,<unity/unity/unity\.h>,"unity.h",g' "./Telegram/SourceFiles/platform/linux/linux_libs.h"
 sed -i 's/c++11/c++14/g' "./Telegram/Telegram.pro"
 # sed -i "s,/usr/local/tdesktop/Qt-5.6.0,%{_builddir}/Libraries/QtStatic,g" "./Telegram/Telegram.pro"
 # sed -i "s,5\.6\.0,5.6.0,g" "./Telegram/Telegram.pro"
@@ -105,38 +106,38 @@ make
 export PATH="/usr/lib64/libtelegram-qt5/bin/:$PATH"
 
 # Build codegen_style
-mkdir -p "%{_builddir}/tdesktop/Linux/obj/codegen_style/Debug"
-cd %{_builddir}/tdesktop/Linux/obj/codegen_style/Debug
+mkdir -p "%{_builddir}/tdesktop/Linux/obj/codegen_style/Release"
+cd %{_builddir}/tdesktop/Linux/obj/codegen_style/Release
 qmake QMAKE_CXX="g++-5" QMAKE_LINK="g++-5" \
       QT_TDESKTOP_VERSION="5.6.0" \
       QT_TDESKTOP_PATH="%{_builddir}/Libraries/QtStatic" \
-     CONFIG+=debug ../../../../Telegram/build/qmake/codegen_style/codegen_style.pro
+     CONFIG+=release ../../../../Telegram/build/qmake/codegen_style/codegen_style.pro
 make
 
 # Build codegen_numbers
-mkdir -p "%{_builddir}/tdesktop/Linux/obj/codegen_numbers/Debug"
-cd %{_builddir}/tdesktop/Linux/obj/codegen_numbers/Debug
+mkdir -p "%{_builddir}/tdesktop/Linux/obj/codegen_numbers/Release"
+cd %{_builddir}/tdesktop/Linux/obj/codegen_numbers/Release
 qmake QMAKE_CXX="g++-5" QMAKE_LINK="g++-5" \
        QT_TDESKTOP_VERSION="5.6.0" \
        QT_TDESKTOP_PATH="%{_builddir}/Libraries/QtStatic" \
-       CONFIG+=debug ../../../../Telegram/build/qmake/codegen_numbers/codegen_numbers.pro
+       CONFIG+=release ../../../../Telegram/build/qmake/codegen_numbers/codegen_numbers.pro
 make
 
 # Build MetaLang
-mkdir -p "%{_builddir}/tdesktop/Linux/DebugIntermediateLang"
-cd %{_builddir}/tdesktop/Linux/DebugIntermediateLang
+mkdir -p "%{_builddir}/tdesktop/Linux/ReleaseIntermediateLang"
+cd %{_builddir}/tdesktop/Linux/ReleaseIntermediateLang
 qmake QMAKE_CXX="g++-5" QMAKE_LINK="g++-5" \
       QT_TDESKTOP_VERSION="5.6.0" \
       QT_TDESKTOP_PATH="%{_builddir}/Libraries/QtStatic" \
-      CONFIG+=debug "../../Telegram/MetaLang.pro"
+      CONFIG+=release "../../Telegram/MetaLang.pro"
 make
 
 # Build Telegram Desktop
 mkdir -p "%{_builddir}/tdesktop/Linux/ReleaseIntermediate"
 cd %{_builddir}/tdesktop/Linux/ReleaseIntermediate
-./../codegen/Debug/codegen_style "-I./../../Telegram/Resources" "-I./../../Telegram/SourceFiles" "-o./../../Telegram/GeneratedFiles/styles" all_files.style --rebuild
-./../codegen/Debug/codegen_numbers "-o./../../Telegram/GeneratedFiles" "./../../Telegram/Resources/numbers.txt"
-./../DebugLang/MetaLang -lang_in ./../../Telegram/Resources/langs/lang.strings -lang_out ./../../Telegram/GeneratedFiles/lang_auto
+./../codegen/Release/codegen_style "-I./../../Telegram/Resources" "-I./../../Telegram/SourceFiles" "-o./../../Telegram/GeneratedFiles/styles" all_files.style --rebuild
+./../codegen/Release/codegen_numbers "-o./../../Telegram/GeneratedFiles" "./../../Telegram/Resources/numbers.txt"
+./../ReleaseLang/MetaLang -lang_in ./../../Telegram/Resources/langs/lang.strings -lang_out ./../../Telegram/GeneratedFiles/lang_auto
 
 qmake QMAKE_CXX="g++-5" QMAKE_LINK="g++-5" CONFIG+=release \
       QT_TDESKTOP_VERSION="5.6.0" \