diff --git a/math/sleef/Makefile b/math/sleef/Makefile
index ed6201fd76bb..1dfa55fec56d 100644
--- a/math/sleef/Makefile
+++ b/math/sleef/Makefile
@@ -2,8 +2,7 @@
 # $FreeBSD$
 
 PORTNAME=	sleef
-DISTVERSION=	3.4.0
-PORTREVISION=	1
+DISTVERSION=	3.4.1
 CATEGORIES=	math
 
 MAINTAINER=	jmd@FreeBSD.org
@@ -18,6 +17,8 @@ USE_LDCONFIG=	yes
 USE_GITHUB=	yes
 GH_ACCOUNT=	shibatch
 
+# fix on post LLVM11 HEAD
+CFLAGS+=	-fcommon
 CFLAGS_powerpc64=	-mpower8-vector
 
 .include <bsd.port.options.mk>
diff --git a/math/sleef/distinfo b/math/sleef/distinfo
index 518558715c9a..f0529fcd8309 100644
--- a/math/sleef/distinfo
+++ b/math/sleef/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1556673418
-SHA256 (shibatch-sleef-3.4.0_GH0.tar.gz) = c0ce88211768977eefb4446514381d419e0989c4dd033786d4b7f4627a710309
-SIZE (shibatch-sleef-3.4.0_GH0.tar.gz) = 1173053
+TIMESTAMP = 1598561675
+SHA256 (shibatch-sleef-3.4.1_GH0.tar.gz) = 25babe83b9358817ac05bbec09b7557439e4e96b907b86717906e6d980ff2036
+SIZE (shibatch-sleef-3.4.1_GH0.tar.gz) = 1174096