diff --git a/Dockerfile b/Dockerfile
index fc0e1a7..c25ec88 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,8 +5,8 @@ RUN curl -LO https://github.com/jgm/pandoc/releases/download/2.14.0.1/pandoc-2.1
 RUN dpkg -i pandoc-2.14.0.1-1-amd64.deb
 
 WORKDIR /app
-COPY package.json yarn.lock /app/
-RUN yarn install --frozen-lockfile
+COPY package.json /app/
+RUN yarn install
 
 COPY themes /app/themes
 COPY source /app/source