diff --git a/tools/Windows_dependencies_build.bat b/tools/Windows_dependencies_build.bat
index c59cfdfcd..0fc3f2c18 100644
--- a/tools/Windows_dependencies_build.bat
+++ b/tools/Windows_dependencies_build.bat
@@ -40,7 +40,7 @@ if exist CMakeCache.txt (
   del CMakeCache.txt
 )
 
-cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=ON ..
+cmake -G "NMake Makefiles" -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=ON -DHB_BUILD_SUBSET=off ..
 nmake
 copy /Y harfbuzz.dll ..\..\..\
 copy /Y harfbuzz.lib ..\..\..\
diff --git a/tools/macOS_dependencies_build.sh b/tools/macOS_dependencies_build.sh
index be720a67b..4272314b5 100755
--- a/tools/macOS_dependencies_build.sh
+++ b/tools/macOS_dependencies_build.sh
@@ -97,7 +97,7 @@ fi
 
 cd harfbuzz/build
 rm -f CMakeCache.txt
-cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=ON ..
+cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_SHARED_LIBS=ON -DHB_BUILD_SUBSET=off ..
 make clean
 make -j${JOBS}
 cp libharfbuzz.dylib ../../../