diff --git a/win32/deps/gtk/build/win32/vc10/gailutil.vcxproj b/win32/deps/gtk/build/win32/vc10/gailutil.vcxproj
index 7a2820f7..e557f265 100644
--- a/win32/deps/gtk/build/win32/vc10/gailutil.vcxproj
+++ b/win32/deps/gtk/build/win32/vc10/gailutil.vcxproj
@@ -146,6 +146,7 @@
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <Link>
       <AdditionalDependencies>pango-1.0.lib;atk-1.0.lib;%(AdditionalDependencies)</AdditionalDependencies>
diff --git a/win32/deps/gtk/build/win32/vc10/gdk-win32.vcxproj b/win32/deps/gtk/build/win32/vc10/gdk-win32.vcxproj
index 9e1f8a5d..845fbac1 100644
--- a/win32/deps/gtk/build/win32/vc10/gdk-win32.vcxproj
+++ b/win32/deps/gtk/build/win32/vc10/gdk-win32.vcxproj
@@ -111,6 +111,7 @@
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemGroup>
diff --git a/win32/deps/gtk/build/win32/vc10/gdk.vcxproj b/win32/deps/gtk/build/win32/vc10/gdk.vcxproj
index 17326526..4ffba779 100644
--- a/win32/deps/gtk/build/win32/vc10/gdk.vcxproj
+++ b/win32/deps/gtk/build/win32/vc10/gdk.vcxproj
@@ -144,6 +144,7 @@
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <Link>
       <AdditionalDependencies>imm32.lib;%(AdditionalDependencies)</AdditionalDependencies>
diff --git a/win32/deps/gtk/build/win32/vc10/gtk-demo.vcxproj b/win32/deps/gtk/build/win32/vc10/gtk-demo.vcxproj
index 13101773..799a1352 100644
--- a/win32/deps/gtk/build/win32/vc10/gtk-demo.vcxproj
+++ b/win32/deps/gtk/build/win32/vc10/gtk-demo.vcxproj
@@ -150,6 +150,7 @@
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
       <CompileAs>CompileAsC</CompileAs>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <Link>
       <AdditionalDependencies>cairo.lib;pango-1.0.lib;pangocairo-1.0.lib;%(AdditionalDependencies)</AdditionalDependencies>
diff --git a/win32/deps/gtk/build/win32/vc10/gtk.vcxproj b/win32/deps/gtk/build/win32/vc10/gtk.vcxproj
index 3f0e0e87..8412f665 100644
--- a/win32/deps/gtk/build/win32/vc10/gtk.vcxproj
+++ b/win32/deps/gtk/build/win32/vc10/gtk.vcxproj
@@ -144,6 +144,7 @@
       </PrecompiledHeader>
       <WarningLevel>Level3</WarningLevel>
       <DebugInformationFormat>ProgramDatabase</DebugInformationFormat>
+      <MultiProcessorCompilation>true</MultiProcessorCompilation>
     </ClCompile>
     <Link>
       <AdditionalDependencies>atk-1.0.lib;pangowin32-1.0.lib;imm32.lib;winspool.lib;comctl32.lib;%(AdditionalDependencies)</AdditionalDependencies>