diff --git a/Dockerfile b/Dockerfile
index 809df81b1..32d84a63b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -15,7 +15,7 @@ RUN apt-get --allow-releaseinfo-change update && apt-get install -y \
   python-pyqt5 \
   vim
 
-RUN conda install -y -cbioconda -cbiocore python=2.7 biopython pandas psutil pysam scons seaborn zlib pyyaml scikit-learn mafft # -cbioconda is for pysam, -cbiocore is for mafft
+RUN conda install -y -cbioconda -cbiocore python biopython pandas psutil pysam scons seaborn zlib pyyaml scikit-learn mafft # -cbioconda is for pysam, -cbiocore is for mafft
 RUN conda update -y numpy  # the previous command downgrades numpy (I'm not sure why), which breaks the seaborn import
 RUN pip install colored-traceback dendropy==4.4.0 levenshtein
 COPY . /partis