diff --git a/pkgs/development/libraries/SDL2/default.nix b/pkgs/development/libraries/SDL2/default.nix
index 37e38e03b8c..8fe6bbe6113 100644
--- a/pkgs/development/libraries/SDL2/default.nix
+++ b/pkgs/development/libraries/SDL2/default.nix
@@ -36,6 +36,13 @@ stdenv.mkDerivation rec {
 
   patches = [ ./find-headers.patch ];
 
+  # Fix with mesa 19.2: https://bugzilla.libsdl.org/show_bug.cgi?id=4797
+  postPatch = ''
+    substituteInPlace include/SDL_opengl_glext.h \
+      --replace "typedef ptrdiff_t GLsizeiptr;" "typedef signed long int khronos_ssize_t; typedef khronos_ssize_t GLsizeiptr;" \
+      --replace "typedef ptrdiff_t GLintptr;" "typedef signed long int khronos_intptr_t; typedef khronos_intptr_t GLintptr;"
+  '';
+
   nativeBuildInputs = [ pkgconfig ];
 
   propagatedBuildInputs = dlopenPropagatedBuildInputs;
diff --git a/pkgs/development/libraries/mesa/default.nix b/pkgs/development/libraries/mesa/default.nix
index 3a7c93413d5..8b61dd535e6 100644
--- a/pkgs/development/libraries/mesa/default.nix
+++ b/pkgs/development/libraries/mesa/default.nix
@@ -27,7 +27,7 @@
 with stdenv.lib;
 
 let
-  version = "19.1.5";
+  version = "19.2.1";
   branch  = versions.major version;
 in
 
@@ -35,14 +35,14 @@ stdenv.mkDerivation {
   pname = "mesa";
   inherit version;
 
-  src =  fetchurl {
+  src = fetchurl {
     urls = [
       "ftp://ftp.freedesktop.org/pub/mesa/mesa-${version}.tar.xz"
       "ftp://ftp.freedesktop.org/pub/mesa/${version}/mesa-${version}.tar.xz"
       "ftp://ftp.freedesktop.org/pub/mesa/older-versions/${branch}.x/${version}/mesa-${version}.tar.xz"
       "https://mesa.freedesktop.org/archive/mesa-${version}.tar.xz"
     ];
-    sha256 = "1d3frncljickn5yi2ch1w2phwxhxpi6diyac3cbin9f76m7f2m3v";
+    sha256 = "4cc53ca1a8d12c6ff0e5ea44a5213c05c88447ab50d7e28bb350cd29199f01e9";
   };
 
   prePatch = "patchShebangs .";