diff --git a/recipes-phosphor/datetime/phosphor-time-manager_git.bb b/recipes-phosphor/datetime/phosphor-time-manager_git.bb
index 38b4aef..eb6adb3 100644
--- a/recipes-phosphor/datetime/phosphor-time-manager_git.bb
+++ b/recipes-phosphor/datetime/phosphor-time-manager_git.bb
@@ -21,6 +21,7 @@
 RDEPENDS_${PN} += "libsystemd"
 RDEPENDS_${PN} += "sdbusplus"
 RDEPENDS_${PN} += "phosphor-dbus-interfaces"
+RDEPENDS_${PN} += "phosphor-mapper"
 
 SRC_URI += "git://github.com/openbmc/phosphor-time-manager"
 SRCREV = "6aca02e07aeb607f7f44a3381216e57c059d6900"