diff --git a/libudev.pc.in b/libudev.pc.in
index 6a45c32..d26aee5 100644
--- a/libudev.pc.in
+++ b/libudev.pc.in
@@ -8,4 +8,5 @@ Description: Daemonless replacement for libudev
 Version: @VERSION@
 URL: https://github.com/illiliti/libudev-zero
 Libs: -L${libdir} -ludev
+Libs.private: -pthread
 Cflags: -I${includedir}