diff --git a/lang/spidermonkey78/Makefile b/lang/spidermonkey78/Makefile
index 594b903078c0b..c8544aa8f9283 100644
--- a/lang/spidermonkey78/Makefile
+++ b/lang/spidermonkey78/Makefile
@@ -1,6 +1,5 @@
 PORTNAME=	spidermonkey
-DISTVERSION=	78.9.0
-PORTREVISION=	9
+DISTVERSION=	78.15.0
 CATEGORIES=	lang
 MASTER_SITES=	MOZILLA/firefox/releases/${DISTVERSION}esr/source
 PKGNAMESUFFIX=	${SP_VER}
diff --git a/lang/spidermonkey78/distinfo b/lang/spidermonkey78/distinfo
index e055a8eae0e42..3520a72f3018d 100644
--- a/lang/spidermonkey78/distinfo
+++ b/lang/spidermonkey78/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1630196184
-SHA256 (firefox-78.9.0esr.source.tar.xz) = 8e03ac1dfc5ac804c8b13a529414a9387e0425e545bb2f4462d74c3175e64864
-SIZE (firefox-78.9.0esr.source.tar.xz) = 332717100
+TIMESTAMP = 1651603084
+SHA256 (firefox-78.15.0esr.source.tar.xz) = a4438d84d95171a6d4fea9c9f02c2edbf0475a9c614d968ebe2eedc25a672151
+SIZE (firefox-78.15.0esr.source.tar.xz) = 330819568