diff --git a/config/fastly/snippets/bad_bot_detection.vcl b/config/fastly/snippets/bad_bot_detection.vcl
index d27248431..1c9d0dc01 100644
--- a/config/fastly/snippets/bad_bot_detection.vcl
+++ b/config/fastly/snippets/bad_bot_detection.vcl
@@ -36,6 +36,12 @@ sub vcl_recv {
     || req.http.user-agent ~ "Microsoft URL Control"
     || req.http.user-agent ~ "Indy Library"
     || req.http.user-agent ~ "Fuzz Faster"
+    # Spoofed user agent, Firefox 62 was released in Sep 2018, this line added
+    # in Dec 2021.
+    || (req.http.user-agent ~ "Firefox/62.0" && req.http.user-agent ~ "Win64")
+    # DEV gets an order of magnitude more traffic from AhrefsBot than any other
+    # search crawler.
+    || req.http.user-agent ~ "AhrefsBot"
     || req.http.user-agent == "8484 Boston Project v 1.0"
     || req.http.user-agent == "Atomic_Email_Hunter/4.0"
     || req.http.user-agent == "atSpider/1.0"
@@ -107,6 +113,8 @@ sub vcl_recv {
     || req.http.user-agent == "RSurf15a 41"
     || req.http.user-agent == "RSurf15a 51"
     || req.http.user-agent == "RSurf15a 81"
+    # Block Ruby bots unless they're interacting with the API
+    || (req.http.user-agent == "Ruby" && !(req.http.url ~ "^/api"))
     || req.http.user-agent == "searchbot admin@google.com"
     || req.http.user-agent == "ShablastBot 1.0"
     || req.http.user-agent == "snap.com beta crawler v0"