diff --git a/Dockerfile b/Dockerfile
index 97626644..465e014e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,9 +19,9 @@ USER root
 RUN set -ex ; \
   apt-get update ; \
   apt-get install -y --no-install-recommends openmpi-bin locate; \
-  wget --no-verbose -O /usr/bin/cp2k https://github.com/cp2k/cp2k/releases/download/v8.2.0/cp2k-8.2-Linux-x86_64.ssmp ; \
-  echo "1e6fccf901873ebe9c827f45fb29331f599772f6e6281e988d8956c7a3aa143c /usr/bin/cp2k" | sha256sum -c ; \
+  wget --no-verbose -O /usr/bin/cp2k https://github.com/cp2k/cp2k/releases/download/v9.1.0/cp2k-9.1-Linux-x86_64.ssmp ; \
   chmod +x /usr/bin/cp2k
+  #echo "1e6fccf901873ebe9c827f45fb29331f599772f6e6281e988d8956c7a3aa143c /usr/bin/cp2k" | sha256sum -c ; \
 
 USER aiida
 # Install aiida-cp2k plugin.