diff --git a/justfile b/justfile
index de9fbad..d0b0bdf 100644
--- a/justfile
+++ b/justfile
@@ -8,7 +8,7 @@ default:
 # build musician 
 build:
   mkdir -p {{target}}
-  ghc -O2 -o {{target}}/{{exec}} *.hs
+  ghc -O2 -odir {{target}} -hidir {{target}} -o {{target}}/{{exec}} *.hs
 
 # run musician 
 run: