diff --git a/opam b/opam
index 21e45bfdfa570dbaaf8a3a72bcdb952defc7304b..8f43a701d5dbeb4daf93c03775adef43e283804f 100644
--- a/opam
+++ b/opam
@@ -8,7 +8,7 @@ bug-reports: "https://gitlab.mpi-sws.org/FP/iris-coq/issues"
 license: "BSD"
 dev-repo: "https://gitlab.mpi-sws.org/FP/iris-coq"
 build: [
-  [make]
+  [make "-j%{jobs}%"]
 ]
 install: [make "install"]
 remove: [ "sh" "-c" "rm -rf '%{lib}%/coq/user-contrib/iris'" ]