diff --git a/src/env_dispatch.rs b/src/env_dispatch.rs
index 230c28950..9af9b0121 100644
--- a/src/env_dispatch.rs
+++ b/src/env_dispatch.rs
@@ -53,6 +53,7 @@
         }
 
         table.add(L!("TZ"), handle_tz_change);
+        table.add_anon(L!("COLORTERM"), handle_fish_term_change);
         table.add_anon(L!("fish_term256"), handle_fish_term_change);
         table.add_anon(L!("fish_term24bit"), handle_fish_term_change);
         table.add_anon(L!("fish_escape_delay_ms"), update_wait_on_escape_ms);