diff --git a/www/firefox-esr/Makefile b/www/firefox-esr/Makefile
index 31f3dd574f0f..9f737f1f6534 100644
--- a/www/firefox-esr/Makefile
+++ b/www/firefox-esr/Makefile
@@ -16,7 +16,7 @@ DISTNAME=	${PORTNAME}-${DISTVERSION}.source
 MAINTAINER=	gecko@FreeBSD.org
 COMMENT=	Web browser based on the browser portion of Mozilla
 
-BUILD_DEPENDS=	nspr>=4.8:${PORTSDIR}/devel/nspr
+BUILD_DEPENDS=	nspr>=4.8.6:${PORTSDIR}/devel/nspr
 
 USE_AUTOTOOLS=	autoconf:213
 USE_GECKO=	gecko
diff --git a/www/firefox/Makefile b/www/firefox/Makefile
index 31f3dd574f0f..9f737f1f6534 100644
--- a/www/firefox/Makefile
+++ b/www/firefox/Makefile
@@ -16,7 +16,7 @@ DISTNAME=	${PORTNAME}-${DISTVERSION}.source
 MAINTAINER=	gecko@FreeBSD.org
 COMMENT=	Web browser based on the browser portion of Mozilla
 
-BUILD_DEPENDS=	nspr>=4.8:${PORTSDIR}/devel/nspr
+BUILD_DEPENDS=	nspr>=4.8.6:${PORTSDIR}/devel/nspr
 
 USE_AUTOTOOLS=	autoconf:213
 USE_GECKO=	gecko
diff --git a/www/firefox35/Makefile b/www/firefox35/Makefile
index 6cfe704cc153..fcfa6a660742 100644
--- a/www/firefox35/Makefile
+++ b/www/firefox35/Makefile
@@ -16,7 +16,7 @@ DISTNAME=	${PORTNAME}-${DISTVERSION}.source
 MAINTAINER=	gecko@FreeBSD.org
 COMMENT=	Web browser based on the browser portion of Mozilla
 
-BUILD_DEPENDS=	nspr>=4.8:${PORTSDIR}/devel/nspr
+BUILD_DEPENDS=	nspr>=4.8.6:${PORTSDIR}/devel/nspr
 
 USE_AUTOTOOLS=	autoconf:213:run
 LATEST_LINK=	firefox35
diff --git a/www/firefox36/Makefile b/www/firefox36/Makefile
index 31f3dd574f0f..9f737f1f6534 100644
--- a/www/firefox36/Makefile
+++ b/www/firefox36/Makefile
@@ -16,7 +16,7 @@ DISTNAME=	${PORTNAME}-${DISTVERSION}.source
 MAINTAINER=	gecko@FreeBSD.org
 COMMENT=	Web browser based on the browser portion of Mozilla
 
-BUILD_DEPENDS=	nspr>=4.8:${PORTSDIR}/devel/nspr
+BUILD_DEPENDS=	nspr>=4.8.6:${PORTSDIR}/devel/nspr
 
 USE_AUTOTOOLS=	autoconf:213
 USE_GECKO=	gecko