diff --git a/dockerfile-captain.edge b/dockerfile-captain.edge
index 7a19c01..9120fb9 100644
--- a/dockerfile-captain.edge
+++ b/dockerfile-captain.edge
@@ -12,7 +12,7 @@ WORKDIR /usr/src/app
 
 COPY . /usr/src/app
 
-RUN yarn install --frozen-lockfile --production && \
+RUN npm ci --production && \
      npm cache clean --force && \
      npm run build && \
      mv ./edge-override.json ./config-override.json
diff --git a/dockerfile-captain.release b/dockerfile-captain.release
index 60591e7..b01d40a 100644
--- a/dockerfile-captain.release
+++ b/dockerfile-captain.release
@@ -6,7 +6,7 @@ WORKDIR /usr/src/app
 # Build backend code. 
 
 COPY . /usr/src/app
-RUN yarn install --frozen-lockfile --production && \
+RUN npm ci --production && \
      npm cache clean --force && \
      npm run build