Sometimes it takes a bit.
This is a clip from my realtime view on squid_monitor.php
Message
bytecode.cld is up to date (version: 301, sigs: 58, f-level: 63, builder: anvilleg)
safebrowsing.cld is up to date (version: 45957, sigs: 2889505, f-level: 63, builder: google)
daily.cld is up to date (version: 23401, sigs: 2075458, f-level: 63, builder: neo)
main.cvd is up to date (version: 57, sigs: 4218790, f-level: 60, builder: amishhammer)
ClamAV update process started at Sat May 20 12:18:00 2017
–------------------------------------
Clamd successfully notified about the update.
Database updated (9183811 signatures) from db.us.clamav.net (IP: 200.236.31.1)
bytecode.cld is up to date (version: 301, sigs: 58, f-level: 63, builder: anvilleg)
safebrowsing.cld updated (version: 45957, sigs: 2889505, f-level: 63, builder: google)
Downloading safebrowsing-45957.cdiff [100%]
daily.cld updated (version: 23401, sigs: 2075458, f-level: 63, builder: neo)
Downloading daily-23401.cdiff [100%]
Trying host db.us.clamav.net (200.236.31.1)…
Can't connect to port 80 of host db.us.clamav.net (IP: 64.6.100.177)
nonblock_connect: connect timing out (30 secs)
Trying host db.us.clamav.net (64.6.100.177)...
Can't connect to port 80 of host db.us.clamav.net (IP: 168.143.19.95)
nonblock_connect: connect timing out (30 secs)
Can't connect to port 80 of host db.us.clamav.net (IP: 208.72.56.53)