diff --git a/math/R-cran-sandwich/Makefile b/math/R-cran-sandwich/Makefile
index 8b9e39339562..f79ef92aed1c 100644
--- a/math/R-cran-sandwich/Makefile
+++ b/math/R-cran-sandwich/Makefile
@@ -1,17 +1,16 @@
 PORTNAME=	sandwich
-DISTVERSION=	3.0-2
-PORTREVISION=	1
+DISTVERSION=	3.1-0
 CATEGORIES=	math
 DISTNAME=	${PORTNAME}_${DISTVERSION}
 
 MAINTAINER=	tota@FreeBSD.org
 COMMENT=	Robust Covariance Matrix Estimators
 WWW=		https://cran.r-project.org/web/packages/sandwich/
 
 LICENSE=	GPLv2+
 
 RUN_DEPENDS=	R-cran-zoo>0:math/R-cran-zoo
 
-USES=	cran:auto-plist
+USES=		cran:auto-plist
 
 .include <bsd.port.mk>
diff --git a/math/R-cran-sandwich/distinfo b/math/R-cran-sandwich/distinfo
index f36a3c8edfc2..06787f1f69c6 100644
--- a/math/R-cran-sandwich/distinfo
+++ b/math/R-cran-sandwich/distinfo
@@ -1,3 +1,3 @@
-TIMESTAMP = 1655512151
-SHA256 (sandwich_3.0-2.tar.gz) = 6e30b6b554eb19430a60c45a8132fb7918ddb0013577bf6a62caeb163bdfe2b4
-SIZE (sandwich_3.0-2.tar.gz) = 1356080
+TIMESTAMP = 1702466805
+SHA256 (sandwich_3.1-0.tar.gz) = 96b0e105ee50391a1fd286e9556ba6669f08565fa30788b1a21bc861b0a023fa
+SIZE (sandwich_3.1-0.tar.gz) = 1401761