diff --git a/usr.bin/pom/pom.c b/usr.bin/pom/pom.c
--- a/usr.bin/pom/pom.c
+++ b/usr.bin/pom/pom.c
@@ -83,6 +83,7 @@
 		err(1, "unable to limit capabitilities for stdio");
 
 	caph_cache_catpages();
+	caph_cache_tzdata();
 	if (caph_enter() < 0)
 		err(1, "unable to enter capability mode");