diff --git a/packages/conf-libev/conf-libev.4-12/opam b/packages/conf-libev/conf-libev.4-12/opam
index 61e2a77d694..e6c56b82e66 100644
--- a/packages/conf-libev/conf-libev.4-12/opam
+++ b/packages/conf-libev/conf-libev.4-12/opam
@@ -9,9 +9,10 @@ depends: [
 ]
 depexts: [
   ["libev-dev"] {os-family = "debian"}
+  ["libev-dev"] {os-family = "ubuntu"}
   ["libev"] {os = "macos" & os-distribution = "homebrew"}
-  ["libev-dev"] {os-distribution = "alpine"}
-  ["libev"] {os-distribution = "arch"}
+  ["libev-dev"] {os-family = "alpine"}
+  ["libev"] {os-family = "arch"}
   ["libev-devel"] {os-distribution = "fedora"}
   ["libev-devel"] {os-distribution = "rhel"}
   ["libev-devel"] {os-distribution = "centos"}
@@ -19,7 +20,6 @@ depexts: [
   ["libev-devel"] {os-family = "suse"}
   ["libev"] {os = "freebsd"}
   ["libev"] {os = "openbsd"}
-  ["libev"] {os-distribution = "arch"}
   ["libev"] {os-distribution = "nixos"}
 ]
 synopsis: "High-performance event loop/event model with lots of features"