diff --git a/containers/dockerfile-template b/containers/dockerfile-template
index eb2fa024cae7f1f93bdfa0d6ef256d6867538809..9cfe50c2481479aa49ab2fe8f7a40466e0eff387 100644
--- a/containers/dockerfile-template
+++ b/containers/dockerfile-template
@@ -34,7 +34,7 @@ RUN pip install sphinx numpydoc nbsphinx sphinx_rtd_theme sphinx-tabs autodoc
 
 # Install dependencies and samplers
 RUN pip install corner lalsuite theano healpy cython tables
-RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4
+RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4 nessai
 RUN conda install -n ${{conda_env}} -c conda-forge pymultinest ultranest
 
 # Install Polychord
diff --git a/containers/v2-dockerfile-test-suite-python35 b/containers/v2-dockerfile-test-suite-python35
index 544b562f37dc870538b71a4207139a90e8101c5d..40f7e2263279327d626af729e0cf9540350b1e37 100644
--- a/containers/v2-dockerfile-test-suite-python35
+++ b/containers/v2-dockerfile-test-suite-python35
@@ -36,7 +36,7 @@ RUN pip install sphinx numpydoc nbsphinx sphinx_rtd_theme sphinx-tabs autodoc
 
 # Install dependencies and samplers
 RUN pip install corner lalsuite theano healpy cython tables
-RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4
+RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4 nessai
 RUN conda install -n ${conda_env} -c conda-forge pymultinest ultranest
 
 # Install Polychord
diff --git a/containers/v2-dockerfile-test-suite-python36 b/containers/v2-dockerfile-test-suite-python36
index d9a2782cfb22c020520375665ff1668e7c5f6aa4..fcf8d5949260e7f7d47edc3a54aa5b560682d136 100644
--- a/containers/v2-dockerfile-test-suite-python36
+++ b/containers/v2-dockerfile-test-suite-python36
@@ -36,7 +36,7 @@ RUN pip install sphinx numpydoc nbsphinx sphinx_rtd_theme sphinx-tabs autodoc
 
 # Install dependencies and samplers
 RUN pip install corner lalsuite theano healpy cython tables
-RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4
+RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4 nessai
 RUN conda install -n ${conda_env} -c conda-forge pymultinest ultranest
 
 # Install Polychord
diff --git a/containers/v2-dockerfile-test-suite-python37 b/containers/v2-dockerfile-test-suite-python37
index b77f489227fd58720727a24d1a8989cc7b9dc36a..09437d99e1cd30d34efde69a00f857ba51e4b798 100644
--- a/containers/v2-dockerfile-test-suite-python37
+++ b/containers/v2-dockerfile-test-suite-python37
@@ -36,7 +36,7 @@ RUN pip install sphinx numpydoc nbsphinx sphinx_rtd_theme sphinx-tabs autodoc
 
 # Install dependencies and samplers
 RUN pip install corner lalsuite theano healpy cython tables
-RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4
+RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4 nessai
 RUN conda install -n ${conda_env} -c conda-forge pymultinest ultranest
 
 # Install Polychord
diff --git a/containers/v2-dockerfile-test-suite-python38 b/containers/v2-dockerfile-test-suite-python38
index 71cf85d0197a80f01ef5e7765d3a2875e40d8a11..0f6e951e6aa79ccc6a5ad7ece85abb1979ef35d5 100644
--- a/containers/v2-dockerfile-test-suite-python38
+++ b/containers/v2-dockerfile-test-suite-python38
@@ -36,7 +36,7 @@ RUN pip install sphinx numpydoc nbsphinx sphinx_rtd_theme sphinx-tabs autodoc
 
 # Install dependencies and samplers
 RUN pip install corner lalsuite theano healpy cython tables
-RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4
+RUN pip install cpnest dynesty emcee nestle ptemcee pymc3 kombine dnest4 nessai
 RUN conda install -n ${conda_env} -c conda-forge pymultinest ultranest
 
 # Install Polychord