diff --git a/containers/Dockerfile-test-suite-python27 b/containers/Dockerfile-test-suite-python27
index d886488d2d8c2cfa658f435270b302ced817ade7..b10f96eb2ca9bde812d94d74a4ddda71190dcbe6 100644
--- a/containers/Dockerfile-test-suite-python27
+++ b/containers/Dockerfile-test-suite-python27
@@ -20,7 +20,7 @@ echo ". /opt/conda/etc/profile.d/conda.sh" >> ~/.bashrc && \
 echo "conda activate base" >> ~/.bashrc
 
 # Install conda-installable programs
-RUN conda install -y numpy scipy matplotlib pandas
+RUN conda install -y numpy scipy matplotlib pandas==0.23
 
 RUN conda install -c conda-forge deepdish
 
diff --git a/containers/Dockerfile-test-suite-python37 b/containers/Dockerfile-test-suite-python37
index 753120cf6d11fce4958083537addba3b66927146..b7848c8f725f029bee264b770ffef2d025e8aa79 100644
--- a/containers/Dockerfile-test-suite-python37
+++ b/containers/Dockerfile-test-suite-python37
@@ -21,7 +21,7 @@ echo ". /opt/conda/etc/profile.d/conda.sh" >> ~/.bashrc && \
 echo "conda activate base" >> ~/.bashrc
 
 # Install conda-installable programs
-RUN conda install -y numpy scipy matplotlib pandas
+RUN conda install -y numpy scipy matplotlib pandas==0.23
 
 RUN conda install -c conda-forge deepdish