Can't locate JSON.pm in @INC

[eserte]

The test suite fails on some of my smoker systems, probably if JSON.pm is not installed:

Net-Firewall-BlockerHelper ban:13:banFailed: banning item,"1.2.3.4", failed... Can't locate JSON.pm in @INC (you may need to install the JSON module) (@INC entries checked: ...  .) at /home/cpansand/.cpan/build/2026080901/Net-Firewall-BlockerHelper-0.2.0-0/blib/lib/Net/Firewall/BlockerHelper/Util.pm line 87.
 at line 477 in /home/cpansand/.cpan/build/2026080901/Net-Firewall-BlockerHelper-0.2.0-0/blib/lib/Net/Firewall/BlockerHelper.pm
# Tests were run but no plan was declared and done_testing() was not seen.
# Looks like your test exited with 2 just after 1.
t/akamai.t ............................................... 
Dubious, test returned 2 (wstat 512, 0x200)
All 1 subtests passed 
... etc ...