diff --git a/containers/Dockerfile-test-suite-python27 b/containers/Dockerfile-test-suite-python27
index fc8d72841224906bce4547bf12e694e6beffd67e..e1e08687a414029f9aeca9dc50b08b227c568b58 100644
--- a/containers/Dockerfile-test-suite-python27
+++ b/containers/Dockerfile-test-suite-python27
@@ -56,3 +56,7 @@ ENV LD_LIBRARY_PATH $HOME/MultiNest/lib:
 # Install Polychord
 RUN git clone https://github.com/PolyChord/PolyChordLite.git \
 && (cd PolyChordLite && make pypolychord  MPI= && python setup.py install)
+
+# Install PTMCMCSampler
+RUN git clone https://github.com/jellis18/PTMCMCSampler.git \
+&& (cd PTMCMCSampler && python setup.py install)
diff --git a/containers/Dockerfile-test-suite-python37 b/containers/Dockerfile-test-suite-python37
index beecf97ae5a3200be52905a0cc9bf44243006685..25ae9dd2e5bc3b517b49e770c831fa15d57a5cdf 100644
--- a/containers/Dockerfile-test-suite-python37
+++ b/containers/Dockerfile-test-suite-python37
@@ -60,3 +60,7 @@ ENV LD_LIBRARY_PATH $HOME/MultiNest/lib:
 # Install Polychord
 RUN git clone https://github.com/PolyChord/PolyChordLite.git \
 && (cd PolyChordLite && make pypolychord  MPI= && python setup.py install)
+
+# Install PTMCMCSampler
+RUN git clone https://github.com/jellis18/PTMCMCSampler.git \
+&& (cd PTMCMCSampler && python setup.py install)