diff --git a/.github/workflows/debian.yml b/.github/workflows/debian.yml
index b939f46..98df3b8 100644
--- a/.github/workflows/debian.yml
+++ b/.github/workflows/debian.yml
@@ -35,6 +35,12 @@ jobs:
             deb: 'bullseye'
           - ghc: '9.10.1'
             ghc_minor: '9.10'
+          - ghc: '9.8.4'
+            ghc_minor: '9.8'
+            deb: 'slim-bullseye'
+          - ghc: '9.8.4'
+            ghc_minor: '9.8'
+            deb: 'bullseye'
           - ghc: '9.8.4'
             ghc_minor: '9.8'
           - ghc: '9.6.6'
@@ -88,6 +94,11 @@ jobs:
             deb: 'bullseye'
             arch: 'aarch64'
             docker_platform: arm64
+          - ghc: '9.8.4'
+            ghc_minor: '9.8'
+            deb: 'bullseye'
+            arch: 'aarch64'
+            docker_platform: arm64
           - ghc: '9.6.6'
             ghc_minor: '9.6'
             deb: 'bullseye'
diff --git a/9.8/bullseye/Dockerfile b/9.8/bullseye/Dockerfile
new file mode 100644
index 0000000..a2f6194
--- /dev/null
+++ b/9.8/bullseye/Dockerfile
@@ -0,0 +1,134 @@
+FROM debian:bullseye
+
+ENV LANG C.UTF-8
+
+# common haskell + stack dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        ca-certificates \
+        curl \
+        dpkg-dev \
+        git \
+        gcc \
+        gnupg \
+        g++ \
+        libc6-dev \
+        libffi-dev \
+        libgmp-dev \
+        libnuma-dev \
+        libtinfo-dev \
+        make \
+        netbase \
+        xz-utils \
+        zlib1g-dev && \
+    rm -rf /var/lib/apt/lists/*
+
+ARG STACK=3.1.1
+ARG STACK_RELEASE_KEY=C5705533DA4F78D8664B5DC0575159689BEFB442
+
+RUN set -eux; \
+    cd /tmp; \
+    ARCH="$(dpkg-architecture --query DEB_BUILD_GNU_CPU)"; \
+    STACK_URL="https://github.com/commercialhaskell/stack/releases/download/v${STACK}/stack-${STACK}-linux-$ARCH.tar.gz"; \
+    # sha256 from https://github.com/commercialhaskell/stack/releases/download/v${STACK}/stack-${STACK}-linux-$ARCH.tar.gz.sha256
+    case "$ARCH" in \
+        'aarch64') \
+            STACK_SHA256='033cb75bad3a5299b522c99e8056915bd081879f5df312e6d44d7511fc567455'; \
+            ;; \
+        'x86_64') \
+            STACK_SHA256='d096125ea3d987a55d17f7d4f8599ee2fd96bd2d0f033566e28ddfe248f730f9'; \
+            ;; \
+        *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
+    esac; \
+    curl -sSL "$STACK_URL" -o stack.tar.gz; \
+    echo "$STACK_SHA256 stack.tar.gz" | sha256sum --strict --check; \
+    \
+    curl -sSL "$STACK_URL.asc" -o stack.tar.gz.asc; \
+    GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+    gpg --batch --keyserver keyserver.ubuntu.com --receive-keys "$STACK_RELEASE_KEY"; \
+    gpg --batch --verify stack.tar.gz.asc stack.tar.gz; \
+    gpgconf --kill all; \
+    \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 "stack-$STACK-linux-$ARCH/stack"; \
+    stack config set system-ghc --global true; \
+    stack config set install-ghc --global false; \
+    \
+    rm -rf /tmp/*; \
+    \
+    stack --version;
+
+ARG CABAL_INSTALL=3.10.3.0
+ARG CABAL_INSTALL_RELEASE_KEY=EAF2A9A722C0C96F2B431CA511AAD8CEDEE0CAEF
+
+RUN set -eux; \
+    cd /tmp; \
+    ARCH="$(dpkg-architecture --query DEB_BUILD_GNU_CPU)"; \
+    CABAL_INSTALL_TAR="cabal-install-$CABAL_INSTALL-$ARCH-linux-deb11.tar.xz"; \
+    CABAL_INSTALL_URL="https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/$CABAL_INSTALL_TAR"; \
+    CABAL_INSTALL_SHA256SUMS_URL="https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/SHA256SUMS"; \
+    # sha256 from https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/SHA256SUMS
+    case "$ARCH" in \
+        'aarch64') \
+            CABAL_INSTALL_SHA256='e0b6604d3596c5e5b7236e79ff4f5aa8af337792bf69ac4a90634c761f1b9ed5'; \
+            ;; \
+        'x86_64') \
+            CABAL_INSTALL_SHA256='12d018bdd07efed470f278f22d94b33655c4fcbc44d28d97b5ebb7944d5607c5'; \
+            ;; \
+        *) echo >&2 "error: unsupported architecture '$ARCH'"; exit 1 ;; \
+    esac; \
+    curl -fSL "$CABAL_INSTALL_URL" -o cabal-install.tar.gz; \
+    echo "$CABAL_INSTALL_SHA256 cabal-install.tar.gz" | sha256sum --strict --check; \
+    \
+    curl -sSLO "$CABAL_INSTALL_SHA256SUMS_URL"; \
+    curl -sSLO "$CABAL_INSTALL_SHA256SUMS_URL.sig"; \
+    GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+    gpg --batch --keyserver keyserver.ubuntu.com --receive-keys "$CABAL_INSTALL_RELEASE_KEY"; \
+    gpg --batch --verify SHA256SUMS.sig SHA256SUMS; \
+    # confirm we are verifying SHA256SUMS that matches the release + sha256
+    grep "$CABAL_INSTALL_SHA256  $CABAL_INSTALL_TAR" SHA256SUMS; \
+    gpgconf --kill all; \
+    \
+    tar -xf cabal-install.tar.gz -C /usr/local/bin; \
+    \
+    rm -rf /tmp/*; \
+    \
+    cabal --version
+
+ARG GHC=9.8.4
+ARG GHC_RELEASE_KEY=FFEB7CE81E16A36B3E2DED6F2DE04D4E97DB64AD
+
+RUN set -eux; \
+    cd /tmp; \
+    ARCH="$(dpkg-architecture --query DEB_BUILD_GNU_CPU)"; \
+    GHC_URL="https://downloads.haskell.org/~ghc/$GHC/ghc-$GHC-$ARCH-deb11-linux.tar.xz"; \
+    # sha256 from https://downloads.haskell.org/~ghc/$GHC/SHA256SUMS
+    case "$ARCH" in \
+        'aarch64') \
+            GHC_SHA256='310204daf2df6ad16087be94b3498ca414a0953b29e94e8ec8eb4a5c9bf603d3'; \
+            ;; \
+        'x86_64') \
+            GHC_SHA256='af151db8682b8c763f5a44f960f65453d794c95b60f151abc82dbdefcbe6f8ad'; \
+            ;; \
+        *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
+    esac; \
+    curl -sSL "$GHC_URL" -o ghc.tar.xz; \
+    echo "$GHC_SHA256 ghc.tar.xz" | sha256sum --strict --check; \
+    \
+    GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+    curl -sSL "$GHC_URL.sig" -o ghc.tar.xz.sig; \
+    gpg --batch --keyserver keyserver.ubuntu.com --receive-keys "$GHC_RELEASE_KEY"; \
+    gpg --batch --verify ghc.tar.xz.sig ghc.tar.xz; \
+    gpgconf --kill all; \
+    \
+    tar xf ghc.tar.xz; \
+    cd "ghc-$GHC-$ARCH-unknown-linux"; \
+    ./configure --prefix "/opt/ghc/$GHC"; \
+    make install; \
+    \
+    rm -rf /tmp/*; \
+    \
+    "/opt/ghc/$GHC/bin/ghc" --version
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/ghc/${GHC}/bin:$PATH
+
+CMD ["ghci"]
diff --git a/9.8/slim-bullseye/Dockerfile b/9.8/slim-bullseye/Dockerfile
new file mode 100644
index 0000000..717dd9e
--- /dev/null
+++ b/9.8/slim-bullseye/Dockerfile
@@ -0,0 +1,134 @@
+FROM debian:bullseye-slim
+
+ENV LANG C.UTF-8
+
+# common haskell + stack dependencies
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+        ca-certificates \
+        curl \
+        dpkg-dev \
+        git \
+        gcc \
+        gnupg \
+        g++ \
+        libc6-dev \
+        libffi-dev \
+        libgmp-dev \
+        libnuma-dev \
+        libtinfo-dev \
+        make \
+        netbase \
+        xz-utils \
+        zlib1g-dev && \
+    rm -rf /var/lib/apt/lists/*
+
+ARG STACK=3.1.1
+ARG STACK_RELEASE_KEY=C5705533DA4F78D8664B5DC0575159689BEFB442
+
+RUN set -eux; \
+    cd /tmp; \
+    ARCH="$(dpkg-architecture --query DEB_BUILD_GNU_CPU)"; \
+    STACK_URL="https://github.com/commercialhaskell/stack/releases/download/v${STACK}/stack-${STACK}-linux-$ARCH.tar.gz"; \
+    # sha256 from https://github.com/commercialhaskell/stack/releases/download/v${STACK}/stack-${STACK}-linux-$ARCH.tar.gz.sha256
+    case "$ARCH" in \
+        'aarch64') \
+            STACK_SHA256='033cb75bad3a5299b522c99e8056915bd081879f5df312e6d44d7511fc567455'; \
+            ;; \
+        'x86_64') \
+            STACK_SHA256='d096125ea3d987a55d17f7d4f8599ee2fd96bd2d0f033566e28ddfe248f730f9'; \
+            ;; \
+        *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
+    esac; \
+    curl -sSL "$STACK_URL" -o stack.tar.gz; \
+    echo "$STACK_SHA256 stack.tar.gz" | sha256sum --strict --check; \
+    \
+    curl -sSL "$STACK_URL.asc" -o stack.tar.gz.asc; \
+    GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+    gpg --batch --keyserver keyserver.ubuntu.com --receive-keys "$STACK_RELEASE_KEY"; \
+    gpg --batch --verify stack.tar.gz.asc stack.tar.gz; \
+    gpgconf --kill all; \
+    \
+    tar -xf stack.tar.gz -C /usr/local/bin --strip-components=1 "stack-$STACK-linux-$ARCH/stack"; \
+    stack config set system-ghc --global true; \
+    stack config set install-ghc --global false; \
+    \
+    rm -rf /tmp/*; \
+    \
+    stack --version;
+
+ARG CABAL_INSTALL=3.10.3.0
+ARG CABAL_INSTALL_RELEASE_KEY=EAF2A9A722C0C96F2B431CA511AAD8CEDEE0CAEF
+
+RUN set -eux; \
+    cd /tmp; \
+    ARCH="$(dpkg-architecture --query DEB_BUILD_GNU_CPU)"; \
+    CABAL_INSTALL_TAR="cabal-install-$CABAL_INSTALL-$ARCH-linux-deb11.tar.xz"; \
+    CABAL_INSTALL_URL="https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/$CABAL_INSTALL_TAR"; \
+    CABAL_INSTALL_SHA256SUMS_URL="https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/SHA256SUMS"; \
+    # sha256 from https://downloads.haskell.org/~cabal/cabal-install-$CABAL_INSTALL/SHA256SUMS
+    case "$ARCH" in \
+        'aarch64') \
+            CABAL_INSTALL_SHA256='e0b6604d3596c5e5b7236e79ff4f5aa8af337792bf69ac4a90634c761f1b9ed5'; \
+            ;; \
+        'x86_64') \
+            CABAL_INSTALL_SHA256='12d018bdd07efed470f278f22d94b33655c4fcbc44d28d97b5ebb7944d5607c5'; \
+            ;; \
+        *) echo >&2 "error: unsupported architecture '$ARCH'"; exit 1 ;; \
+    esac; \
+    curl -fSL "$CABAL_INSTALL_URL" -o cabal-install.tar.gz; \
+    echo "$CABAL_INSTALL_SHA256 cabal-install.tar.gz" | sha256sum --strict --check; \
+    \
+    curl -sSLO "$CABAL_INSTALL_SHA256SUMS_URL"; \
+    curl -sSLO "$CABAL_INSTALL_SHA256SUMS_URL.sig"; \
+    GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+    gpg --batch --keyserver keyserver.ubuntu.com --receive-keys "$CABAL_INSTALL_RELEASE_KEY"; \
+    gpg --batch --verify SHA256SUMS.sig SHA256SUMS; \
+    # confirm we are verifying SHA256SUMS that matches the release + sha256
+    grep "$CABAL_INSTALL_SHA256  $CABAL_INSTALL_TAR" SHA256SUMS; \
+    gpgconf --kill all; \
+    \
+    tar -xf cabal-install.tar.gz -C /usr/local/bin; \
+    \
+    rm -rf /tmp/*; \
+    \
+    cabal --version
+
+ARG GHC=9.8.4
+ARG GHC_RELEASE_KEY=FFEB7CE81E16A36B3E2DED6F2DE04D4E97DB64AD
+
+RUN set -eux; \
+    cd /tmp; \
+    ARCH="$(dpkg-architecture --query DEB_BUILD_GNU_CPU)"; \
+    GHC_URL="https://downloads.haskell.org/~ghc/$GHC/ghc-$GHC-$ARCH-deb11-linux.tar.xz"; \
+    # sha256 from https://downloads.haskell.org/~ghc/$GHC/SHA256SUMS
+    case "$ARCH" in \
+        'aarch64') \
+            GHC_SHA256='310204daf2df6ad16087be94b3498ca414a0953b29e94e8ec8eb4a5c9bf603d3'; \
+            ;; \
+        'x86_64') \
+            GHC_SHA256='af151db8682b8c763f5a44f960f65453d794c95b60f151abc82dbdefcbe6f8ad'; \
+            ;; \
+        *) echo >&2 "error: unsupported architecture '$ARCH'" ; exit 1 ;; \
+    esac; \
+    curl -sSL "$GHC_URL" -o ghc.tar.xz; \
+    echo "$GHC_SHA256 ghc.tar.xz" | sha256sum --strict --check; \
+    \
+    GNUPGHOME="$(mktemp -d)"; export GNUPGHOME; \
+    curl -sSL "$GHC_URL.sig" -o ghc.tar.xz.sig; \
+    gpg --batch --keyserver keyserver.ubuntu.com --receive-keys "$GHC_RELEASE_KEY"; \
+    gpg --batch --verify ghc.tar.xz.sig ghc.tar.xz; \
+    gpgconf --kill all; \
+    \
+    tar xf ghc.tar.xz; \
+    cd "ghc-$GHC-$ARCH-unknown-linux"; \
+    ./configure --prefix "/opt/ghc/$GHC"; \
+    make install; \
+    \
+    rm -rf /tmp/*; \
+    \
+    "/opt/ghc/$GHC/bin/ghc" --version
+
+ENV PATH /root/.cabal/bin:/root/.local/bin:/opt/ghc/${GHC}/bin:$PATH
+
+CMD ["ghci"]