diff --git a/dockerfile b/dockerfile
index 50b0ed4d3..719543f90 100644
--- a/dockerfile
+++ b/dockerfile
@@ -4,6 +4,7 @@ COPY ./package*.json /app/
 RUN npm config set unsafe-perm true
 RUN npm install -g ionic
 RUN npm config set legacy-peer-deps true
+RUN npm i -D typescript@4.3.5
 RUN npm install --save --legacy-peer-deps
 COPY ./ /app/
 RUN ionic build --prod