diff --git a/nbdkit.spec b/nbdkit.spec
index 3889718..6d4e3a9 100644
--- a/nbdkit.spec
+++ b/nbdkit.spec
@@ -252,6 +252,11 @@ make check
 %endif
 
 
+%post plugin-ocaml -p /sbin/ldconfig
+
+%postun plugin-ocaml -p /sbin/ldconfig
+
+
 %files
 %doc LICENSE README
 %{_sbindir}/nbdkit