diff --git a/package.yaml b/package.yaml
index a9dc8eb63..2431fbad4 100644
--- a/package.yaml
+++ b/package.yaml
@@ -256,7 +256,7 @@ ghc-options:
   - -fno-warn-unrecognised-pragmas
   - -fno-warn-partial-type-signatures
   - -fno-max-relevant-binds
-  - -j
+  - -j5
   - -freduction-depth=0
   - -fprof-auto-calls
   - -g