diff --git a/Dockerfile b/Dockerfile
index 5237772..8b626e1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ WORKDIR /usr/src/app
 # Install app dependencies and add source files
 COPY package.json yarn.lock tsconfig.json ./
 COPY src/ ./src 
-RUN yarn install && yarn build && rm -f dist/*.map
+RUN yarn install --frozen-lockfile && yarn build && rm -f dist/*.map
 
 # Second stage
 FROM node:16-alpine
diff --git a/yarn.lock b/yarn.lock
index 7a6f052..cffbf5f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -503,9 +503,9 @@ color@^3.1.3:
     color-string "^1.6.0"
 
 colors@^1.2.1:
-  version "1.4.2"
-  resolved "https://registry.yarnpkg.com/colors/-/colors-1.4.2.tgz#cd4fe227412ca2c75bb6f5683ec2e5e68de4f317"
-  integrity sha512-5QhJWPFZqkKIieXJPpCprdOytvH7v0AGWpu9K2jZ4LWkGg3dVBNoYPgGGRpEsc0jb8Boy0ElYrdjH9uXfhRSqw==
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/colors/-/colors-1.4.0.tgz#c50491479d4c1bdaed2c9ced32cf7c7dc2360f78"
+  integrity sha512-a+UqTh4kgZg/SlGvfbzDHpgRu7AAQOmmqRHJnxhRZICKFUT91brVhNNt58CMWU9PsBbv3PDCZUHbVxuDiH2mtA==
 
 colorspace@1.1.x:
   version "1.1.4"