diff --git a/Dockerfile b/Dockerfile
index 1fc3374..a377dc5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM alpine:3.14
+FROM alpine:3.15.0
 
 WORKDIR /workdir
 
@@ -6,16 +6,12 @@ ADD requirements.txt /workdir/
 
 RUN echo "http://dl-4.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories && \
     echo "http://dl-4.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories && \
-    apk --update --no-cache add ca-certificates chromium chromium-chromedriver \
+    apk --update --no-cache add ca-certificates chromium chromium-chromedriver py3-cryptography \
           python3-dev py3-grpcio py3-wheel py3-pip py3-lxml \
           build-base git libxml2 libxml2-dev libxslt libxslt-dev libffi-dev openssl-dev cargo && \
     pip install -r requirements.txt && \
     apk del build-base
 
-# As alpine's py3-cryptography did not work as of alpine v3.14, we use this hack from
-# https://github.com/pyca/cryptography/issues/3344#issuecomment-650845512
-RUN LDFLAGS="-L/opt/openssl/lib -Wl,-rpath,/opt/openssl/lib" CFLAGS="-I/opt/openssl/include" pip3 install -U cryptography
-
 ADD cli.py /workdir/
 ADD manager /workdir/manager
 ADD config /workdir/config