diff --git a/gnu/packages/polkit.scm b/gnu/packages/polkit.scm
index 0e38dd61ee9..11c825ef34a 100644
--- a/gnu/packages/polkit.scm
+++ b/gnu/packages/polkit.scm
@@ -81,6 +81,7 @@
     (build-system gnu-build-system)
     (inputs
      `(("expat" ,expat)
+       ("libcap" ,libcap)
        ("linux-pam" ,linux-pam)
        ("elogind" ,elogind)
        ("mozjs" ,mozjs)