diff --git a/.github/workflows/Tests.yaml b/.github/workflows/Tests.yaml
index 107a36156b0fd..79f3dcffb41e3 100644
--- a/.github/workflows/Tests.yaml
+++ b/.github/workflows/Tests.yaml
@@ -856,8 +856,7 @@ ${{ matrix.build_type }}-pch-${{ matrix.use_pch || 'ON' }}"
       # listed in support/DevEnvironments/spack.yaml. This list is only needed
       # to create the cache.
       SPECTRE_SPACK_DEPS: >-
-        blaze brigand charmpp gsl hdf5 libsharp libxsmm openblas
-        py-pybind11 yaml-cpp
+        blaze charmpp gsl hdf5 libxsmm openblas py-pybind11 yaml-cpp
       CCACHE_DIR: $HOME/ccache
       CCACHE_TEMPDIR: $HOME/ccache-tmp
       CCACHE_MAXSIZE: "2G"
diff --git a/containers/Dockerfile.buildenv b/containers/Dockerfile.buildenv
index 022492a6e4b4f..cea8bb10b9706 100644
--- a/containers/Dockerfile.buildenv
+++ b/containers/Dockerfile.buildenv
@@ -196,10 +196,6 @@ RUN wget https://bitbucket.org/blaze-lib/blaze/downloads/blaze-3.8.tar.gz -O bla
     && mv blaze-* blaze \
     && mv blaze/blaze /usr/local/include \
     && rm -rf blaze*
-# - Brigand
-RUN git clone https://github.com/edouarda/brigand.git \
-    && mv brigand/include/brigand /usr/local/include \
-    && rm -rf brigand
 # - Catch2
 RUN wget https://github.com/catchorg/Catch2/archive/refs/tags/v3.4.0.tar.gz -O catch.tar.gz \
     && tar -xzf catch.tar.gz && rm catch.tar.gz \
@@ -220,21 +216,6 @@ RUN git clone https://github.com/ianlancetaylor/libbacktrace \
     && ./configure --prefix=/usr/local \
     && make $PARALLEL_MAKE_ARG install \
     && cd .. && rm -rf libbacktrace
-# - Libsharp
-RUN wget https://github.com/Libsharp/libsharp/archive/v1.0.0.tar.gz -O libsharp.tar.gz \
-    && tar -xzf libsharp.tar.gz \
-    && mv libsharp-* libsharp_build \
-    && cd libsharp_build \
-    && { if [ "$TARGETARCH" != "arm64" ]; \
-        then sed -i 's/march=native/march=x86-64/' configure.ac; fi } \
-    && autoconf \
-    && ./configure --prefix=/usr/local --enable-pic --disable-openmp \
-    && make $PARALLEL_MAKE_ARG \
-    && mv auto/bin/* /usr/local/bin \
-    && mv auto/include/* /usr/local/include \
-    && mv auto/lib/* /usr/local/lib \
-    && cd ../ \
-    && rm -r libsharp*
 # - LibXSMM
 RUN if [ "$TARGETARCH" = "arm64" ] ; then \
         git clone --single-branch --branch main --depth 1 \
diff --git a/docs/Installation/Installation.md b/docs/Installation/Installation.md
index 4395fa6fc9db6..7aafce6663cd7 100644
--- a/docs/Installation/Installation.md
+++ b/docs/Installation/Installation.md
@@ -137,7 +137,7 @@ apt), or AppleClang 13.0.0 or later
 
 #### Bundled:
 * [Brigand](https://github.com/edouarda/brigand)
-* [libsharp](https://github.com/Libsharp/libsharp)
+* [libsharp](https://github.com/Libsharp/libsharp) \cite Libsharp
 
 ## Clone the SpECTRE repository
 
diff --git a/docs/Installation/InstallationOnAppleSilicon.md b/docs/Installation/InstallationOnAppleSilicon.md
index d7b720247eacb..6c375e7230a74 100644
--- a/docs/Installation/InstallationOnAppleSilicon.md
+++ b/docs/Installation/InstallationOnAppleSilicon.md
@@ -99,28 +99,11 @@ tar -xf blaze-3.8.tar.gz
 mv blaze-3.8 include
 popd
 
-git clone https://github.com/edouarda/brigand.git
-
 # Need master branch of libxsmm to support Apple Silicon
 git clone https://github.com/hfp/libxsmm.git
 pushd libxsmm
 make
 popd
-
-pushd ./src
-git clone https://github.com/Libsharp/libsharp.git
-cd libsharp
-
-# Do not use compiler flag -march=native (unsupported on Apple Silicon)
-sed "s/-march=native//" configure.ac > configure.ac.mod
-mv configure.ac.mod configure.ac
-
-autoupdate
-autoconf
-./configure
-make
-mv auto $SPECTRE_DEPS_ROOT/libsharp
-popd
 ```
 
 Next, clone, patch, and install charm++ v7.0.0.
@@ -149,10 +132,8 @@ spack external find python
 # Install dependencies
 spack install \
   blaze@3.8.2 \
-  brigand@master \
   charmpp@7.0.0: backend=multicore \
-  libxsmm@main \
-  libsharp~mpi~openmp
+  libxsmm@main
 ```
 
 ### 5. Configure and build SpECTRE
@@ -179,9 +160,7 @@ cmake \
 -D CHARM_ROOT=${SPECTRE_DEPS_ROOT}/charm/multicore-darwin-arm8 \
 -D SPECTRE_TEST_TIMEOUT_FACTOR=5 \
 -D LIBXSMM_ROOT=${SPECTRE_DEPS_ROOT}/libxsmm/ \
--D BLAZE_ROOT=${SPECTRE_DEPS_ROOT}/blaze/ \
--D BRIGAND_ROOT=${SPECTRE_DEPS_ROOT}/brigand/ \
--D LIBSHARP_ROOT=${SPECTRE_DEPS_ROOT}/libsharp/ \
+-D BLAZE_ROOT=${SPECTRE_DEPS_ROOT}/blaze/
 ..
 ```
 
diff --git a/support/DevEnvironments/spack.yaml b/support/DevEnvironments/spack.yaml
index 083c45661a94b..a8383d4a9793b 100644
--- a/support/DevEnvironments/spack.yaml
+++ b/support/DevEnvironments/spack.yaml
@@ -44,7 +44,6 @@ spack:
   specs:
   - blaze@3.8
   - 'boost@1.60:+math+program_options'
-  - brigand@master
   - 'catch2@3.4.0:3'
   # Charm++:
   # - The 'multicore' backend runs with shared memory on a single node. On
@@ -55,7 +54,6 @@ spack:
   - gsl
   - hdf5 -mpi
   - jemalloc
-  - libsharp -mpi -openmp
   - 'libxsmm@1.16.1:'
   - openblas
   - 'python@3.8:'