diff --git a/ghc-simple-cmd.spec b/ghc-simple-cmd.spec
index 829772b..b5d959b 100644
--- a/ghc-simple-cmd.spec
+++ b/ghc-simple-cmd.spec
@@ -90,6 +90,16 @@ This package provides the Haskell %{pkg_name} profiling library.
 # End cabal-rpm install
 
 
+%if 0%{?fedora} < 31 || 0%{?rhel} < 8
+%post devel
+%ghc_pkg_recache
+
+
+%postun devel
+%ghc_pkg_recache
+%endif
+
+
 %files -f %{name}.files
 # Begin cabal-rpm files:
 %license LICENSE