diff --git a/Dockerfile b/Dockerfile
index 1217236..d5e2bbb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -8,7 +8,7 @@ RUN apt install -y build-essential
 RUN apt update -y && apt install -y \
 	python \
 	python-pip \
-	matplotlib
+RUN pip install matplotlib
 RUN git clone https://github.com/usnistgov/SCTK.git
 WORKDIR SCTK
 RUN make config && make all && make check &&  make install && make doc