diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 4ba0d38..784967f 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -53,9 +53,7 @@ jobs:
       - name: Build and push by digest
         if: github.event_name == 'pull_request'
         uses: docker/build-push-action@v7.3.0
-        with:
-          build-args: |
-            AMBERTOOLS_DL=${{ secrets.AMBERTOOLS_DL }}        
+        with:  
           file: ./docker/Dockerfile
           platforms: ${{ matrix.platform }}
           labels: ${{ steps.meta.outputs.labels }}
diff --git a/docker/Dockerfile b/docker/Dockerfile
index ed777a4..aebde81 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -4,37 +4,15 @@ FROM ghcr.io/ccpbiosim/jupyterhub-base:$BASE_IMAGE
 
 LABEL maintainer="James Gebbie-Rayet <james.gebbie@stfc.ac.uk>"
 
-ARG AMBERTOOLS_DL=null
-ARG AMBERTOOLS_VER=25
-
-# Install workshop deps
-RUN mamba install -c conda-forge bioconda::blast openmm numpy=2.2 matplotlib scipy -y
-RUN pip install git+https://github.com/CharlieLaughton/Alphafix.git
-WORKDIR /tmp
-
-RUN wget --no-verbose $AMBERTOOLS_DL/ambertools$AMBERTOOLS_VER.tar.bz2 && \
-    tar xjf ambertools$AMBERTOOLS_VER.tar.bz2 && \
-    rm ambertools$AMBERTOOLS_VER.tar.bz2 && \
-    mv ambertools${AMBERTOOLS_VER}_src ambertools_src
-
-WORKDIR /tmp/ambertools_src
-RUN ./update_amber --update
-RUN mkdir /tmp/build
-WORKDIR /tmp/build
-
-RUN cmake /tmp/ambertools_src -DCMAKE_INSTALL_PREFIX=/opt/conda -DPYTHON_EXECUTABLE=/opt/conda/bin/python -DUSE_CONDA_LIBS=TRUE -DBUILD_PYTHON=TRUE -DCMAKE_INSTALL_RPATH_USE_LINK_PATH=TRUE -DDOWNLOAD_MINICONDA=FALSE -DCOMPILER=MANUAL -DBUILD_GUI=FALSE -DCOMPILER=GNU -DOPENMP=TRUE -DCUDA=FALSE -DMPI=FALSE -DUSE_FFT=True -DBUILD_DEPRECATED=False -DBUILD_INDEV=False -DBUILD_PERL=True -DOPTIMIZE=True
-RUN make -j8
-RUN make install
-
-# Cleanup.
-RUN rm -r /tmp/ambertools_src /tmp/build
+ARG AMBERTOOLS_VER=26.0
 
 # Switch to jovyan user.
 USER $NB_USER
 WORKDIR $HOME
 
-# Add the exec to the path.
-ENV AMBERHOME=/opt/conda
+# Install workshop deps 
+RUN mamba install -c conda-forge bioconda::blast openmm numpy=2.2 matplotlib scipy ambertools=$AMBERTOOLS_VER
+RUN pip install git+https://github.com/CharlieLaughton/Alphafix.git
 
 RUN mkdir blastp
 WORKDIR /home/jovyan/blastp