diff --git a/tools/install_modules.sh b/tools/install_modules.sh
index b8c578a3f..ace67de1e 100755
--- a/tools/install_modules.sh
+++ b/tools/install_modules.sh
@@ -18,6 +18,7 @@ cpan install Authen::Passphrase::LANManager \
              Convert::EBCDIC                \
              Crypt::CBC                     \
              Crypt::DES                     \
+             Crypt::DES_EDE3                \
              Crypt::Digest::RIPEMD160       \
              Crypt::Digest::Whirlpool       \
              Crypt::ECB                     \
diff --git a/tools/test_modules/m22911.pm b/tools/test_modules/m22911.pm
index 3bb086300..fd4b0b18c 100644
--- a/tools/test_modules/m22911.pm
+++ b/tools/test_modules/m22911.pm
@@ -9,6 +9,7 @@ use strict;
 use warnings;
 
 use Crypt::CBC;
+use Crypt::DES_EDE3;
 use Digest::MD5 qw (md5);
 
 sub module_constraints { [[0, 256], [16, 16], [-1, -1], [-1, -1], [-1, -1]] }