diff --git a/time/chrono/+freebsd.ha b/time/chrono/+freebsd.ha
index 26d78ab1..6861bfe8 100644
--- a/time/chrono/+freebsd.ha
+++ b/time/chrono/+freebsd.ha
@@ -2,7 +2,7 @@
 // (c) Hare authors <https://harelang.org>
 
 def LOCALTIME_PATH: str = "/etc/localtime";
-def ZONEINFO_PREFIX: str = "/usr/share/zoneinfo/";
+def ZONEINFO_PREFIX: str = "@tzdata@/share/zoneinfo/";
 
 // The filepath of the system's "leap-seconds.list" file, which contains UTC/TAI
 // leap second data.
diff --git a/time/chrono/+linux.ha b/time/chrono/+linux.ha
index 600f606c..8d5617e2 100644
--- a/time/chrono/+linux.ha
+++ b/time/chrono/+linux.ha
@@ -2,8 +2,8 @@
 // (c) Hare authors <https://harelang.org>
 
 def LOCALTIME_PATH: str = "/etc/localtime";
-def ZONEINFO_PREFIX: str = "/usr/share/zoneinfo/";
+def ZONEINFO_PREFIX: str = "@tzdata@/share/zoneinfo/";
 
 // The filepath of the system's "leap-seconds.list" file, which contains UTC/TAI
 // leap second data.
-export def UTC_LEAPSECS_FILE: str = "/usr/share/zoneinfo/leap-seconds.list";
+export def UTC_LEAPSECS_FILE: str = "@tzdata@/share/zoneinfo/leap-seconds.list";