diff --git a/ShellB3/shallbethree.sh b/ShellB3/shallbethree.sh
index 2120baa3418f308aa123ad30bcf6de53eb35ba36..fbf5348b8c35ba58e0c2700fcaed13dcb6d8a0ce 100755
--- a/ShellB3/shallbethree.sh
+++ b/ShellB3/shallbethree.sh
@@ -740,10 +740,10 @@ export STACKLESS2FSVER=2.7
 export STACKLESS3VER=364
 export STACKLESS3FSVER=3.6
 
-export PY36VER=3.6.7
+export PY36VER=3.6.8
 export PY36FSVER=3.6
 
-export PY3VER=3.8.0a2
+export PY3VER=3.8.0a3
 export PY3FSVER=3.8
 
 export LLVMSIMPLEVER=$(echo ${LLVMVER} | cut -c-3)
@@ -1979,7 +1979,7 @@ if isDarwin ; then
       export SB3FFLAGS="--sysroot=${SYSROOT} ${CPUFLAGS} -B ${SYSROOT}/usr/lib/system -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}"
       export SB3CFLAGS="-isysroot ${SYSROOT} ${CPUFLAGS} -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}"
       export SB3CXXFLAGS="-isysroot ${SYSROOT} ${CPUFLAGS} -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -stdlib=libc++"
-      export SB3LDFLAGS="-isysroot ${SYSROOT} ${CPUFLAGS} -lc++ -lc++abi -headerpad_max_install_names -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" #--sysroot=$SYSROOT"
+      export SB3LDFLAGS="-isysroot ${SYSROOT} ${CPUFLAGS} -lc++ -lc++abi -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" #--sysroot=$SYSROOT"
       export SB3CPPFLAGS="-stdlib=libc++ -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" #--sysroot=$SYSROOT"
       export SYS_FORBIDDENLIBS="libstdc++"
       export USE_SYS_ZLIB=YES
@@ -1993,9 +1993,9 @@ if isDarwin ; then
       export SB3FFLAGS="--sysroot=${SYSROOT} ${CPUFLAGS} -B ${SYSROOT}/usr/lib/system -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}"
       export SB3CFLAGS="-isysroot ${SYSROOT} ${CPUFLAGS} -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}"
       export SB3CXXFLAGS="-isysroot ${SYSROOT} ${CPUFLAGS} -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET} -stdlib=libc++"
-      export SB3LDFLAGS="-isysroot ${SYSROOT} ${CPUFLAGS} -lc++ -lc++abi -headerpad_max_install_names -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" #--sysroot=$SYSROOT"
+      export SB3LDFLAGS="-isysroot ${SYSROOT} ${CPUFLAGS} -lc++ -lc++abi -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" #--sysroot=$SYSROOT"
       export SB3CPPFLAGS="-stdlib=libc++ -mmacosx-version-min=${MACOSX_DEPLOYMENT_TARGET}" #--sysroot=$SYSROOT"
-      export SYS_FORBIDDENLIBS="libstdc++"
+      export SYS_FORBIDDENLIBS="libstdc++,libblas,libcblas,liblapack,libgrib_api"
       export USE_SYS_ZLIB=YES
       export USE_SYS_SQLITE=YES USE_SYS_CURL=YES
       export USE_PORTABLE_LIBTOOL=YES
diff --git a/ShellB3/src/Python-3.6.7.tar.xz b/ShellB3/src/Python-3.6.7.tar.xz
deleted file mode 100644
index 30f28ed2379ceb625a64a06c4938d8302b8592cf..0000000000000000000000000000000000000000
--- a/ShellB3/src/Python-3.6.7.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:81fd1401a9d66533b0a3e9e3f4ea1c7c6702d57d5b90d659f971e6f1b745f77d
-size 17178476
diff --git a/ShellB3/src/Python-3.6.8.tar.xz b/ShellB3/src/Python-3.6.8.tar.xz
new file mode 100644
index 0000000000000000000000000000000000000000..298b9087400db079e680418c81424606d97e10ea
--- /dev/null
+++ b/ShellB3/src/Python-3.6.8.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:35446241e995773b1bed7d196f4b624dadcadc8429f26282e756b2fb8a351193
+size 17212420
diff --git a/ShellB3/src/Python-3.8.0a2.tar.xz b/ShellB3/src/Python-3.8.0a2.tar.xz
deleted file mode 100644
index 3ae7f11b2df48d9a73b5d2235ca7bfb1f1c72cb6..0000000000000000000000000000000000000000
--- a/ShellB3/src/Python-3.8.0a2.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:64f08ef60c86474d1390917841c1b618391e6ba01a42cf33977414bd602e8b5d
-size 17201560
diff --git a/ShellB3/src/Python-3.8.0a3.tar.xz b/ShellB3/src/Python-3.8.0a3.tar.xz
new file mode 100644
index 0000000000000000000000000000000000000000..1602c36e9158697c288c229d228b48c29f6c9adb
--- /dev/null
+++ b/ShellB3/src/Python-3.8.0a3.tar.xz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2c5bcc2596e1dd14ab8c5292f6c2421cbb5e295d7e7a8039e22c604248c351f5
+size 17267880