diff --git a/generate.pl b/generate.pl
index 73f04bb2..45ed5d4a 100755
--- a/generate.pl
+++ b/generate.pl
@@ -318,6 +318,8 @@ =head1 DESCRIPTION
     && rm -fr /root/.cpanm /usr/src/perl /usr/src/{{cpanm_dist_name}}* /tmp/* \
     && cpanm --version && cpm --version
 
+ENV PERL_CPANM_OPT "--cpanmetadb https://cpanmetadb.plackperl.org/v1.0/ --mirror https://www.cpan.org"
+
 WORKDIR /usr/src/app
 
 CMD ["perl{{version}}","-de0"]