diff --git a/Dockerfile b/Dockerfile
index bc4758a..e6915e6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,7 @@ RUN mix deps.get --only prod
 RUN MIX_ENV=prod mix compile
 
 # Update the static Swagger documentation
-RUN mix phx.swagger.generate
+RUN MIX_ENV=prod mix phx.swagger.generate
 
 # Compile application static assets
 RUN MIX_ENV=prod mix assets.deploy