diff --git a/.travis.yml b/.travis.yml
index 8bf5c82ec..983351096 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -31,8 +31,8 @@ addons:
       - dpatch
       - equivs
       - fakeroot
-      - g++-7
-      - gcc-7
+      - g++-8
+      - gcc-8
       - git
       - gnome-common
       - gobject-introspection
@@ -56,8 +56,8 @@ addons:
       - yasm
 
 before_install:
-  - export CXX="g++-7" CC="gcc-7"
-  - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 60 --slave /usr/bin/g++ g++ /usr/bin/g++-7
+  - export CXX="g++-8" CC="gcc-8"
+  - sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 60 --slave /usr/bin/g++ g++ /usr/bin/g++-8
   - sudo update-alternatives --config gcc
   - g++ --version
 
diff --git a/Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp b/Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp
index 736b3d6ea..c78be9e59 100644
--- a/Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp
@@ -358,7 +358,7 @@ GtkFileDialog::GtkFileDialog(QWidget *parent, const QString &caption, const QStr
 	d.reset(new QGtkDialog(Libs::gtk_file_chooser_dialog_new("", nullptr,
 		GTK_FILE_CHOOSER_ACTION_OPEN,
 		GTK_STOCK_CANCEL, GTK_RESPONSE_CANCEL,
-		GTK_STOCK_OK, GTK_RESPONSE_OK, NULL)));
+		GTK_STOCK_OK, GTK_RESPONSE_OK, nullptr)));
 	connect(d.data(), SIGNAL(accept()), this, SLOT(onAccepted()));
 	connect(d.data(), SIGNAL(reject()), this, SLOT(onRejected()));
 
diff --git a/Telegram/gyp/settings_linux.gypi b/Telegram/gyp/settings_linux.gypi
index 22160515c..17f7a5c9c 100644
--- a/Telegram/gyp/settings_linux.gypi
+++ b/Telegram/gyp/settings_linux.gypi
@@ -23,6 +23,8 @@
           '-Wno-missing-field-initializers',
           '-Wno-sign-compare',
           '-Wno-attributes',
+          '-Wno-error=class-memaccess',
+          '-Wno-error=parentheses',
         ],
       },
       'conditions': [
diff --git a/docs/building-cmake.md b/docs/building-cmake.md
index 112a7667f..80dd03384 100644
--- a/docs/building-cmake.md
+++ b/docs/building-cmake.md
@@ -10,7 +10,7 @@ You will require **api_id** and **api_hash** to access the Telegram API servers.
 
 ### Install software and required packages
 
-You will need GCC 7.2 and CMake 3.2 installed. To install them and all the required dependencies run
+You will need GCC 8.1 and CMake 3.2 installed. To install them and all the required dependencies run
 
     sudo apt-get install software-properties-common -y && \
     sudo apt-get install git libexif-dev liblzma-dev libz-dev libssl-dev libappindicator-dev libicu-dev libdee-dev libdrm-dev dh-autoreconf autoconf automake build-essential libass-dev libfreetype6-dev libgpac-dev libsdl1.2-dev libtheora-dev libtool libva-dev libvdpau-dev libvorbis-dev libxcb1-dev libxcb-image0-dev libxcb-shm0-dev libxcb-xfixes0-dev libxcb-keysyms1-dev libxcb-icccm4-dev libxcb-render-util0-dev libxcb-util0-dev libxrender-dev libasound-dev libpulse-dev libxcb-sync0-dev libxcb-randr0-dev libx11-xcb-dev libffi-dev libncurses5-dev pkg-config texi2html zlib1g-dev yasm cmake xutils-dev bison python-xcbgen -y && \
@@ -18,9 +18,9 @@ You will need GCC 7.2 and CMake 3.2 installed. To install them and all the requi
     sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y && \
     sudo add-apt-repository ppa:george-edison55/cmake-3.x -y && \
     sudo apt-get update && \
-    sudo apt-get install gcc-7 g++-7 cmake -y && \
-    sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 60 && \
-    sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-7 60 && \
+    sudo apt-get install gcc-8 g++-8 cmake -y && \
+    sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 60 && \
+    sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-8 60 && \
     sudo update-alternatives --config gcc && \
     sudo add-apt-repository --remove ppa:ubuntu-toolchain-r/test -y && \
     sudo add-apt-repository --remove ppa:george-edison55/cmake-3.x -y