diff --git a/dev.dockerfile b/dev.dockerfile
index 71aa6be6..aaecd6d3 100644
--- a/dev.dockerfile
+++ b/dev.dockerfile
@@ -24,7 +24,7 @@ COPY .git .git
 
 # Set UI version 
 RUN echo "export const VERSION = 'dev';" > "src/shared/version.ts"
-RUN echo "export const BUILD_DATE_ISO8601 = 'dev-build-date';" > "src/shared/build-date.ts"
+RUN echo "export const BUILD_DATE_ISO8601 = '$(date -u +"%Y-%m-%dT%H:%M:%SZ")';" > "src/shared/build-date.ts"
 
 RUN yarn --prefer-offline
 RUN yarn build:dev