diff --git a/ports/boost-build/CONTROL b/ports/boost-build/CONTROL
index 2886f3399..5ecb3d9fe 100644
--- a/ports/boost-build/CONTROL
+++ b/ports/boost-build/CONTROL
@@ -1,3 +1,3 @@
 Source: boost-build
-Version: 1.69.0
+Version: 1.69.0-1
 Description: Boost.Build
diff --git a/ports/boost-build/arm64msvc.patch b/ports/boost-build/arm64msvc.patch
new file mode 100644
index 000000000..47f30acfb
--- /dev/null
+++ b/ports/boost-build/arm64msvc.patch
@@ -0,0 +1,63 @@
+diff --git a/src/tools/msvc.jam b/src/tools/msvc.jam
+index e6c0b60..62c3a41 100644
+--- a/src/tools/msvc.jam
++++ b/src/tools/msvc.jam
+@@ -466,6 +466,7 @@ rule configure-version-specific ( toolset : version : conditions )
+         toolset.flags $(toolset).link LINKFLAGS $(conditions)/$(.cpu-arch-i386)  : "/MACHINE:X86" ;
+         toolset.flags $(toolset).link LINKFLAGS $(conditions)/$(.cpu-arch-ia64)  : "/MACHINE:IA64" ;
+         toolset.flags $(toolset).link LINKFLAGS $(conditions)/$(.cpu-arch-arm)   : "/MACHINE:ARM" ;
++        toolset.flags $(toolset).link LINKFLAGS $(conditions)/$(.cpu-arch-arm64) : "/MACHINE:ARM64" ;
+ 
+         # Make sure that manifest will be generated even if there is no
+         # dependencies to put there.
+@@ -1256,7 +1257,7 @@ local rule configure-really ( version ? : options * )
+         local below-8.0 = [ MATCH "^([67]\\.)" : $(version) ] ;
+         local below-11.0 = [ MATCH "^([6789]\\.|10\\.)" : $(version) ] ;
+         
+-        local cpu = i386 amd64 ia64 arm ;
++        local cpu = i386 amd64 ia64 arm arm64 ;
+         if $(below-8.0)
+         {
+             cpu = i386 ;
+@@ -1270,6 +1271,7 @@ local rule configure-really ( version ? : options * )
+         local setup-i386 ;
+         local setup-ia64 ;
+         local setup-arm ;
++        local setup-arm64 ;
+         local setup-phone-i386 ;
+         local setup-phone-arm ;
+ 
+@@ -1327,6 +1329,7 @@ local rule configure-really ( version ? : options * )
+             local default-setup-i386  = vcvars32.bat ;
+             local default-setup-ia64  = vcvarsx86_ia64.bat ;
+             local default-setup-arm   = vcvarsx86_arm.bat ;
++            local default-setup-arm64 = vcvarsx86_arm64.bat ;
+             local default-setup-phone-i386 = vcvarsphonex86.bat ;
+             local default-setup-phone-arm = vcvarsphonex86_arm.bat ;
+ 
+@@ -1338,6 +1341,7 @@ local rule configure-really ( version ? : options * )
+             local default-global-setup-options-i386  = x86 ;
+             local default-global-setup-options-ia64  = x86_ia64 ;
+             local default-global-setup-options-arm   = x86_arm ;
++            local default-global-setup-options-arm64 = x86_arm64 ;
+ 
+             # When using 64-bit Windows, and targeting 64-bit, it is possible to
+             # use a native 64-bit compiler, selected by the "amd64" & "ia64"
+@@ -1418,6 +1422,7 @@ local rule configure-really ( version ? : options * )
+         local default-assembler-i386  = "ml -coff" ;
+         local default-assembler-ia64  = ias ;
+         local default-assembler-ia64  = armasm ;
++        local default-assembler-arm64 = armasm64 ;
+ 
+         assembler = [ feature.get-values <assembler> : $(options) ] ;
+ 
+@@ -1932,6 +1937,9 @@ if [ MATCH (--debug-configuration) : [ modules.peek : ARGV ] ]
+     <architecture>arm/<address-model>
+     <architecture>arm/<address-model>32 ;
+ 
++.cpu-arch-arm64 =
++    <architecture>arm/<address-model>
++    <architecture>arm/<address-model>64 ;
+ 
+ # Supported CPU types (only Itanium optimization options are supported from
+ # VC++ 2005 on). See
diff --git a/ports/boost-build/portfile.cmake b/ports/boost-build/portfile.cmake
index 6c54d0555..07822fd3f 100644
--- a/ports/boost-build/portfile.cmake
+++ b/ports/boost-build/portfile.cmake
@@ -14,6 +14,9 @@ vcpkg_from_github(
     REF boost-1.69.0
     SHA512 e8d89e75c83a08bab29f52b5100fccf1d2ddf492a532ae4cb8121a5f49819aebb8157d1a1fd7d514bd8a0fe444e5ebb1103b10c8579d5c234ab81110d9c334a8
     HEAD_REF master
+	PATCHES
+	    # Add the support of arm64-windows
+        arm64msvc.patch
 )
 
 vcpkg_download_distfile(ARCHIVE
diff --git a/ports/boost-modular-build-helper/CONTROL b/ports/boost-modular-build-helper/CONTROL
index de02dea1d..59744faee 100644
--- a/ports/boost-modular-build-helper/CONTROL
+++ b/ports/boost-modular-build-helper/CONTROL
@@ -1,2 +1,2 @@
 Source: boost-modular-build-helper
-Version: 2019-01-25
+Version: 2019-04-25
diff --git a/ports/boost-modular-build-helper/boost-modular-build.cmake b/ports/boost-modular-build-helper/boost-modular-build.cmake
index 8daa3265e..8e3b2f324 100644
--- a/ports/boost-modular-build-helper/boost-modular-build.cmake
+++ b/ports/boost-modular-build-helper/boost-modular-build.cmake
@@ -221,6 +221,8 @@ function(boost_modular_build)
         list(APPEND _bm_OPTIONS address-model=64 architecture=x86)
     elseif(VCPKG_TARGET_ARCHITECTURE STREQUAL "arm")
         list(APPEND _bm_OPTIONS address-model=32 architecture=arm)
+    elseif(VCPKG_TARGET_ARCHITECTURE STREQUAL "arm64")
+        list(APPEND _bm_OPTIONS address-model=64 architecture=arm)
     else()
         list(APPEND _bm_OPTIONS address-model=32 architecture=x86)
     endif()