diff --git a/ctt-server/Dockerfile b/ctt-server/Dockerfile
index 111ec27..4d6e743 100644
--- a/ctt-server/Dockerfile
+++ b/ctt-server/Dockerfile
@@ -5,9 +5,9 @@ WORKDIR /usr/src/app
 
 COPY requirements.txt /usr/src/app/
 
-RUN apk --update add python py-pip openssl ca-certificates py-openssl wget git
+RUN apk --update add python3 py3-pip openssl ca-certificates py3-openssl wget git
 RUN apk --update add --virtual local-deployment-docker docker docker-compose docker-py
-RUN apk --update add --virtual build-dependencies libffi-dev openssl-dev python-dev py-pip build-base \
+RUN apk --update add --virtual build-dependencies libffi-dev openssl-dev python3-dev build-base \
   && pip install --upgrade pip \
   && pip install -r requirements.txt \
   && apk del build-dependencies