diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7a73856..170cf1e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-22.04
     env:
-        SDK_VERSION: 3.1.71.0bi
+        SDK_VERSION: 3.1.73.2bi
         SYS_PYTHON: /usr/bin/python3
         PACKAGES: emsdk pygame
         BUILD_STATIC: emsdk
@@ -15,6 +15,7 @@ jobs:
         CYTHON: Cython-3.0.11-py2.py3-none-any.whl
         LD_VENDOR: -sUSE_GLFW=3
 
+
     steps:
     - uses: actions/checkout@v4.1.0
     - name: pygame-wasm-builder prepare
diff --git a/scripts/build-loader.sh b/scripts/build-loader.sh
index 27674f6..af0ecb7 100755
--- a/scripts/build-loader.sh
+++ b/scripts/build-loader.sh
@@ -204,7 +204,7 @@ if $STATIC
 then
     echo "building static loader"
 else
-    export PACKAGES=${BUILD_STATIC:-emsdk hpy _ctypes}
+    export PACKAGES=${BUILD_STATIC:-"emsdk hpy _ctypes"}
 
     echo "building dynamic loader
 
@@ -246,7 +246,7 @@ touch ${INT_TEST} ${INC_TEST} ${LNK_TEST} ${MAIN_TEST}
 
 # -L${SDKROOT}/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/pic only !
 
-if emcc -fPIC -std=gnu99 -D__PYDK__=1 -DNDEBUG $MIMALLOC $CPY_CFLAGS $CF_SDL $CPOPTS \
+if emcc -D__PYGBAG__ -fPIC -std=gnu99 -DNDEBUG $MIMALLOC $CPY_CFLAGS $CF_SDL $CPOPTS \
  -DINC_TEST=$INC_TEST -DMAIN_TEST=$MAIN_TEST \
  -c -fwrapv -Wall -Werror=implicit-function-declaration -fvisibility=hidden \
  -I${PYDIR}/internal -I${PYDIR} -I./support -I./external/hpy/hpy/devel/include -DPy_BUILD_CORE \
@@ -265,7 +265,6 @@ then
     # --preload-file ${REQUIREMENTS}@/data/data/org.python/assets/site-packages \
     # --preload-file ${ROOT}/support/xterm@/etc/termcap \
 
-
 # TODO: test -sWEBGL2_BACKWARDS_COMPATIBILITY_EMULATION
 
 # --use-port=contrib.glfw3
@@ -323,15 +322,13 @@ then
 #  -std=gnu99 -std=c++23
 # EXTRA_EXPORTED_RUNTIME_METHODS => EXPORTED_RUNTIME_METHODS after 3.1.52
 
-
-PG=/pgdata
     cat > final_link.sh <<END
 #!/bin/bash
 . $SDKROOT/emsdk/emsdk_env.sh
-emcc \\
+emcc -D__PYGBAG__ \\
  $FINAL_OPTS \\
  $LOPTS \\
- -D__PYDK__=1 -DNDEBUG  \\
+ -DNDEBUG  \\
      -sTOTAL_MEMORY=256MB -sSTACK_SIZE=8MB -sALLOW_TABLE_GROWTH -sALLOW_MEMORY_GROWTH \\
     -sEXPORTED_RUNTIME_METHODS=FS,print \\
      $CF_SDL \\
diff --git a/src/pygbag/__init__.py b/src/pygbag/__init__.py
index 8f178df..02ac32d 100644
--- a/src/pygbag/__init__.py
+++ b/src/pygbag/__init__.py
@@ -11,6 +11,8 @@
 
 VERSION = "0.9.2"
 
+__version__ = VERSION
+
 # hack to test git cdn build without upgrading pygbag
 # beware can have side effects when file packager behaviour must change !
 if "--git" in sys.argv:
diff --git a/support/__EMSCRIPTEN__.c b/support/__EMSCRIPTEN__.c
index 2adc8e6..a2bf440 100644
--- a/support/__EMSCRIPTEN__.c
+++ b/support/__EMSCRIPTEN__.c
@@ -1071,6 +1071,10 @@ main(int argc, char **argv)
 // rich
     setenv("FORCE_COLOR", "1", 1);
 
+// termtk
+    setenv("TERMTK_FORCESERIAL", "1", 1);
+
+
 /*
     puts(" ---------- pymain_init ------------");
     _PyArgv args = {