diff --git a/.github/workflows/build-libantimonyjs-github-actions.yml b/.github/workflows/build-libantimonyjs-github-actions.yml
index a7f17d4..1834042 100644
--- a/.github/workflows/build-libantimonyjs-github-actions.yml
+++ b/.github/workflows/build-libantimonyjs-github-actions.yml
@@ -7,8 +7,8 @@ jobs:
     env:
        EMSDK: emsdk
        EMSDK_NODE: emsdk/node/16.20.0_64bit/bin/node
-       LIBANTIMONYJS_DIR: libantimonyjs
        SBML_VERS: "5.20.0"
+       ANT_VERS: "2.13.4"
     steps:
       - uses: actions/checkout@v4
       - run: ls
@@ -46,7 +46,7 @@ jobs:
       - name: build expat lib
         run: emcmake cmake .. -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install/expat
         working-directory: expat/build
-      - name: make expat lib
+      - name: Compile expat lib
         run: emmake make
         working-directory: expat/build  
       - name: install expat lib
@@ -59,15 +59,33 @@ jobs:
       - name: make libsbml build dir
         run: mkdir build
         working-directory: libsbml
-      - name: build libsbml lib
+      - name: build libsbml library
         run: emcmake cmake .. -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install/sbml -DCMAKE_BUILD_TYPE=Release -DWITH_CPP_NAMESPACE=ON -DWITH_EXPAT=ON -DWITH_LIBXML=OFF -DLIBSBML_SKIP_SHARED_LIBRARY=ON -DENABLE_ARRAYS=ON -DENABLE_COMP=ON -DENABLE_DISTRIB=ON -DENABLE_FBC=ON -DENABLE_GROUPS=ON -DENABLE_MULTI=ON -DENABLE_QUAL=ON -DWITH_STABLE_PACKAGES=ON -DWITH_SWIG=OFF -DEXPAT_INCLUDE_DIR=$GITHUB_WORKSPACE/install/expat/include -DEXPAT_LIBRARY=$GITHUB_WORKSPACE/install/expat/lib/libexpat.a
         working-directory: libsbml/build
-      - name: make libsbml lib
+      - name: compile libsbml lib
         run: emmake make
         working-directory: libsbml/build  
       - name: install libsbml
         run: emmake make install
         working-directory: libsbml/build
+      - name: Get antimony
+        run: wget https://github.com/sys-bio/antimony/archive/refs/tags/v$ANT_VERS.zip
+      - run: unzip v$ANT_VERS.zip
+      - run: mv antimony-$ANT_VERS/ antimony
+      - name: make antimony build dir 
+        run: mkdir build 
+        working-directory: antimony
+      - name: Build antimony library
+        run: emcmake cmake .. -DCMAKE_INSTALL_PREFIX=$GITHUB_WORKSPACE/install/antimony -DEXPAT_LIBRARY=$GITHUB_WORKSPACE/install/expat/lib/libexpat.a -DLIBSBML_INCLUDE_DIR=$GITHUB_WORKSPACE/install/sbml/include -DLIBSBML_INSTALL_DIR=$GITHUB_WORKSPACE/install/sbml -DLIBSBML_LIBRARY=$GITHUB_WORKSPACE/install/sbml/lib/libsbml-static.a -DWITH_CELLML=OFF -DWITH_CHECK=OFF -DWITH_COMP_SBML=ON -DWITH_LIBSBML_COMPRESSION=OFF -DWITH_LIBSBML_EXPAT=ON -DWITH_LIBSBML_LIBXML=OFF -DWITH_LIBSBML_XERCES=OFF -DWITH_PYTHON=OFF -DWITH_QTANTIMONY=OFF -DWITH_SBML=ON -DWITH_STATIC_SBML=ON -DWITH_SWIG=OFF
+        working-directory: antimony/build
+      - name: Compile antimony lib
+        run: emmake make
+        working-directory: antimony/build
+      - name: Install antimony lib
+        run: emmake make install
+        working-directory: antimony/build
+         
+