diff --git a/lib3mf.pc.in b/lib3mf.pc.in
index bb8030a..0117dd6 100644
--- a/lib3mf.pc.in
+++ b/lib3mf.pc.in
@@ -8,5 +8,6 @@ Description: @PROJECT_DESCRIPTION@
 Version: @PROJECT_VERSION@
 
 Requires:
-Libs: -L${libdir} -l3mf -lzip -lz
+Requires.private: libzip zlib
+Libs: -L${libdir} -l3mf
 Cflags: -I${includedir}