diff --git a/README.md b/README.md
index a8afa22..3afe377 100644
--- a/README.md
+++ b/README.md
@@ -164,7 +164,7 @@ use these variants unless you know what you're doing.
    OSXCross.
 
 \*\*  
--- Xcode up to 11 GM is known to work.  
+-- Xcode up to 12 Beta 4 is known to work.
 -- Use Firefox if you have problems signing in.
 
 \*\*\*  
diff --git a/build.sh b/build.sh
index e31e163..ac0ba46 100755
--- a/build.sh
+++ b/build.sh
@@ -39,6 +39,7 @@ case $SDK_VERSION in
   10.13*) TARGET=darwin17; X86_64H_SUPPORTED=1; I386_SUPPORTED=1; NEED_TAPI_SUPPORT=1; OSX_VERSION_MIN_INT=10.6;  ;;
   10.14*) TARGET=darwin18; X86_64H_SUPPORTED=1; I386_SUPPORTED=0; NEED_TAPI_SUPPORT=1; OSX_VERSION_MIN_INT=10.9;  ;;
   10.15*) TARGET=darwin19; X86_64H_SUPPORTED=1; I386_SUPPORTED=0; NEED_TAPI_SUPPORT=1; OSX_VERSION_MIN_INT=10.9;  ;;
+  10.16*) TARGET=darwin20; X86_64H_SUPPORTED=1; I386_SUPPORTED=0; NEED_TAPI_SUPPORT=1; OSX_VERSION_MIN_INT=10.9;  ;;
 *) echo "Unsupported SDK"; exit 1 ;;
 esac
 
@@ -95,7 +96,7 @@ build_xar
 ## Apple TAPI Library ##
 
 if [ $NEED_TAPI_SUPPORT -eq 1 ]; then
-  get_sources https://github.com/tpoechtrager/apple-libtapi.git 1000.10.8
+  get_sources https://github.com/tpoechtrager/apple-libtapi.git 1100.0.11
 
   if [ $f_res -eq 1 ]; then
     pushd $CURRENT_BUILD_PROJECT_NAME &>/dev/null