diff --git a/lib/worker_multibuild.py b/lib/worker_multibuild.py
index 5899ce7..e94a3a3 100644
--- a/lib/worker_multibuild.py
+++ b/lib/worker_multibuild.py
@@ -43,7 +43,7 @@ RUN apt-get update -y && apt-get install -yq --no-install-suggests --no-install-
     python3-pip dumb-init curl openssh-client wget python3-wheel \
     pkg-config rustc cargo
 RUN pip3 install setuptools_rust
-RUN pip3 install buildbot-worker pyOpenSSL==18.0.0
+RUN pip3 install buildbot-worker cryptography==36.0.2 pyOpenSSL==20.0.1
 RUN groupadd buildbot
 RUN useradd -d /var/lib/buildbot -m -g buildbot buildbot
 
@@ -91,7 +91,7 @@ RUN apt-get update -y && apt-get install -yq --no-install-suggests --no-install-
     python-setuptools python-psutil libssl-dev python-dev libgmp-dev \
     python-virtualenv python3-wheel pkg-config rustc cargo
 RUN pip3 install setuptools_rust
-RUN pip3 install buildbot-worker pyOpenSSL==16.2.0
+RUN pip3 install buildbot-worker cryptography==36.0.2 pyOpenSSL==20.0.1
 RUN groupadd buildbot
 RUN useradd -d /var/lib/buildbot -m -g buildbot buildbot