diff --git a/t/01_testssl_banner.t b/t/01_testssl_banner.t
index 4566655..4184010 100755
--- a/t/01_testssl_banner.t
+++ b/t/01_testssl_banner.t
@@ -4,6 +4,7 @@
 # --banner is equal to --version
 
 use strict;
+use warnings;
 use Test::More;
 
 my $tests = 0;
diff --git a/t/05_ca_hashes_up_to_date.t b/t/05_ca_hashes_up_to_date.t
index 4e58b40..2bba6c9 100755
--- a/t/05_ca_hashes_up_to_date.t
+++ b/t/05_ca_hashes_up_to_date.t
@@ -1,6 +1,7 @@
 #!/usr/bin/env perl
 
 use strict;
+use warnings;
 use Test::More;
 
 printf "\n%s\n", "Make sure CA certificate stores are older than their SPKI hashes \"~/etc/ca_hashes.txt\" ...";