diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 663899ff1b..fe81686732 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,15 +15,18 @@ jobs:
         os : [ macos-latest ]
         cxx : [ clang++, /usr/local/bin/g++-10 ]
         build_type : [ Release, Debug ]
-        prerequisites : [ gcc@10 boost eigen open-mpi ]
+        task_backend: [ Pthreads, PaRSEC ]
+        prerequisites : [ gcc@10 boost eigen open-mpi bison@3.7 ]
 
     name: "${{ matrix.os }}: ${{ matrix.cxx }} ${{ matrix.build_type }}"
     runs-on: ${{ matrix.os }}
     env:
       CXX : ${{ matrix.cxx }}
       BUILD_CONFIG : >
+        -DMADNESS_TASK_BACKEND=${{ matrix.task_backend }}
         -DCMAKE_BUILD_TYPE=${{ matrix.build_type }}
         -DMPIEXEC_PREFLAGS='--bind-to;none;--allow-run-as-root'
+        -DCMAKE_PREFIX_PATH=/usr/local/opt/bison
         -DTA_ASSERT_POLICY=TA_ASSERT_THROW
 
     steps:
@@ -34,7 +37,9 @@ jobs:
       run: cmake -P ${{github.workspace}}/ci/host_system_info.cmake
 
     - name: Install ${{matrix.prerequisites}}
-      run: brew install ${{matrix.prerequisites}}
+      run: |
+        brew install ${{matrix.prerequisites}}
+        echo "/usr/local/opt/bison/bin" >> $GITHUB_PATH
 
     - name: "Configure build: ${{ env.BUILD_CONFIG }}"
       shell: bash
diff --git a/.travis.yml b/.travis.yml
index c49b53a6eb..0bf6535c4a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,6 +30,14 @@ env:
 matrix:
   fast_finish: true
   include:
+    - compiler: gcc
+      env: GCC_VERSION=7 BUILD_TYPE=Debug MADNESS_OVER_PARSEC=1
+      addons:
+        apt:
+          packages:
+           - *base_packages
+           - g++-7
+           - gfortran-7
     - compiler: gcc
       env: GCC_VERSION=7 BUILD_TYPE=Debug
       addons:
@@ -47,7 +55,7 @@ matrix:
            - g++-7
            - gfortran-7
     - compiler: gcc
-      env: GCC_VERSION=8 BUILD_TYPE=Debug COMPUTE_COVERAGE=1
+      env: GCC_VERSION=8 BUILD_TYPE=Debug COMPUTE_COVERAGE=1 MADNESS_OVER_PARSEC=1
       addons:
         apt:
           packages:
@@ -57,13 +65,13 @@ matrix:
     - compiler: gcc
       env: GCC_VERSION=8 BUILD_TYPE=Release
       addons:
-        apt:
+       apt:
           packages:
             - *base_packages
             - g++-8
             - gfortran-8
     - compiler: gcc
-      env: GCC_VERSION=9 BUILD_TYPE=Debug
+      env: GCC_VERSION=9 BUILD_TYPE=Debug MADNESS_OVER_PARSEC=1
       addons:
         apt:
           sources:
@@ -72,48 +80,6 @@ matrix:
             - *base_packages
             - g++-9
             - gfortran-9
-    - compiler: gcc
-      env: GCC_VERSION=9 BUILD_TYPE=Release
-      addons:
-        apt:
-          sources:
-            - sourceline: 'ppa:ubuntu-toolchain-r/test'
-          packages:
-            - *base_packages
-            - g++-9
-            - gfortran-9
-  allow_failures:   # travis focal images broken right now: https://travis-ci.community/t/clang-10-was-recently-broken-on-linux-unmet-dependencies-for-clang-10-clang-tidy-10-valgrind/11527
-    - compiler: clang
-      env: CLANG_VERSION=11 GCC_VERSION=8 BUILD_TYPE=Debug
-      addons:
-        apt:
-          sources:
-            - sourceline: 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main'
-              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
-          packages:
-            - *base_packages
-            - g++-8
-            - gfortran-8
-            - clang-11
-            - libc++-11-dev
-            - libc++abi-11-dev
-    - compiler: clang
-      env: CLANG_VERSION=11 GCC_VERSION=8 BUILD_TYPE=Release DEPLOY=1
-      addons:
-        apt:
-          sources:
-            - sourceline: 'deb http://apt.llvm.org/focal/ llvm-toolchain-focal-11 main'
-              key_url: 'https://apt.llvm.org/llvm-snapshot.gpg.key'
-          packages:
-            - *base_packages
-            - g++-8
-            - gfortran-8
-            - clang-11
-            - libc++-11-dev
-            - libc++abi-11-dev
-            - libclang1-9 # libclang for doxygen
-            - graphviz # provides dot for doxygen graphs
-            - fonts-liberation # recommended by graphviz
 
 before_install:
   - env
diff --git a/bin/build-madness-linux.sh b/bin/build-madness-linux.sh
index 3e7b253937..d255bff92d 100755
--- a/bin/build-madness-linux.sh
+++ b/bin/build-madness-linux.sh
@@ -50,8 +50,12 @@ if [ "$BUILD_TYPE" = "Debug" ]; then
     mkdir -p madness
     cd madness
 
+    if [ -n "${MADNESS_OVER_PARSEC}" ]; then
+	MADNESS_BACKEND_OPTION="-DMADNESS_TASK_BACKEND=PaRSEC"
+    fi
+
     # check out the tracked tag of MADNESS
-    git clone https://github.com/m-a-d-n-e-s-s/madness madness_src && cd madness_src && git checkout ${MADNESS_TAG} && cd ..
+    git clone https://github.com/TESSEorg/madness.git madness_src && cd madness_src && git checkout ${MADNESS_TAG} && cd ..
 
     cmake madness_src \
       -DCMAKE_TOOLCHAIN_FILE="${TRAVIS_BUILD_DIR}/cmake/toolchains/travis.cmake" \
@@ -71,7 +75,8 @@ if [ "$BUILD_TYPE" = "Debug" ]; then
       -DENABLE_LIBXC=OFF \
       -DENABLE_GPERFTOOLS=OFF \
       -DASSERTION_TYPE=throw \
-      -DDISABLE_WORLD_GET_DEFAULT=ON
+      -DDISABLE_WORLD_GET_DEFAULT=ON \
+      ${MADNESS_BACKEND_OPTION}
 
     # Build+install MADworld interface
     make -j2 install VERBOSE=1
diff --git a/cmake/modules/FindOrFetchMADWorld.cmake b/cmake/modules/FindOrFetchMADWorld.cmake
index 2884e49af1..818e1d61a0 100644
--- a/cmake/modules/FindOrFetchMADWorld.cmake
+++ b/cmake/modules/FindOrFetchMADWorld.cmake
@@ -38,7 +38,8 @@ if (NOT TARGET MADworld)
   include(FetchContent)
   FetchContent_Declare(
           MADNESS
-          GIT_REPOSITORY https://github.com/m-a-d-n-e-s-s/madness.git
+	  #         GIT_REPOSITORY https://github.com/m-a-d-n-e-s-s/madness.git
+	  GIT_REPOSITORY https://github.com/TESSEorg/madness.git
           GIT_TAG ${TA_TRACKED_MADNESS_TAG}
   )
   FetchContent_MakeAvailable(MADNESS)