diff --git a/math/atlas/Makefile b/math/atlas/Makefile
index 5b2fd281cb56..e7057f12958b 100644
--- a/math/atlas/Makefile
+++ b/math/atlas/Makefile
@@ -9,8 +9,7 @@
 #       Program and compiler flags are finetuned to gcc 2.95/3.1.
 
 PORTNAME=	atlas
-PORTVERSION=	3.5.5
-PORTREVISION=	1
+PORTVERSION=	3.5.6
 CATEGORIES=	math
 MASTER_SITES=	${MASTER_SITE_SOURCEFORGE}
 MASTER_SITE_SUBDIR=	math-atlas
@@ -94,9 +93,9 @@ do-install:
 	@${LN} -sf ${i}.so.1 ${PREFIX}/lib/${i}.so
 .endfor
 .for i in ${ATLAS_LIBS1}
-	@${INSTALL_DATA} ${WRKSRC}/lib/${THREADED_ATLAS}/${i}.a       ${PREFIX}/lib/${i}thr.a
-	@${INSTALL_DATA} ${WRKSRC}/lib/${THREADED_ATLAS}/${i}.so.1    ${PREFIX}/lib/${i}thr.so.1
-	@${LN} -sf ${i}thr.so.1 ${PREFIX}/lib/${i}thr.so
+	@${INSTALL_DATA} ${WRKSRC}/lib/${THREADED_ATLAS}/${i}.a       ${PREFIX}/lib/${i}_r.a
+	@${INSTALL_DATA} ${WRKSRC}/lib/${THREADED_ATLAS}/${i}.so.1    ${PREFIX}/lib/${i}_r.so.1
+	@${LN} -sf ${i}_r.so.1 ${PREFIX}/lib/${i}_r.so
 .endfor
 .for i in ${ATLAS_LIBS2}
 	@${INSTALL_DATA} ${WRKSRC}/lib/${THREADED_ATLAS}/${i}.a       ${PREFIX}/lib
diff --git a/math/atlas/distinfo b/math/atlas/distinfo
index 4adfd20da39a..ce261bcd1d99 100644
--- a/math/atlas/distinfo
+++ b/math/atlas/distinfo
@@ -1 +1 @@
-MD5 (atlas3.5.5.tar.bz2) = d4acbc5e79cde224d60fa452f741c686
+MD5 (atlas3.5.6.tar.bz2) = c1aba72e4583cd05658d31add3de2a1e
diff --git a/math/atlas/pkg-plist b/math/atlas/pkg-plist
index b08b52302468..1a9eff85d161 100644
--- a/math/atlas/pkg-plist
+++ b/math/atlas/pkg-plist
@@ -5,27 +5,27 @@ include/lapack.h
 lib/libalapack.a
 lib/libalapack.so.1
 lib/libalapack.so
-lib/libalapackthr.a
-lib/libalapackthr.so.1
-lib/libalapackthr.so
+lib/libalapack_r.a
+lib/libalapack_r.so.1
+lib/libalapack_r.so
 lib/libatlas.a
 lib/libatlas.so.1
 lib/libatlas.so
-lib/libatlasthr.a
-lib/libatlasthr.so.1
-lib/libatlasthr.so
+lib/libatlas_r.a
+lib/libatlas_r.so.1
+lib/libatlas_r.so
 lib/libcblas.a
 lib/libcblas.so.1
 lib/libcblas.so
-lib/libcblasthr.a
-lib/libcblasthr.so.1
-lib/libcblasthr.so
+lib/libcblas_r.a
+lib/libcblas_r.so.1
+lib/libcblas_r.so
 lib/libf77blas.a
 lib/libf77blas.so.1
 lib/libf77blas.so
-lib/libf77blasthr.a
-lib/libf77blasthr.so.1
-lib/libf77blasthr.so
+lib/libf77blas_r.a
+lib/libf77blas_r.so.1
+lib/libf77blas_r.so
 lib/libptcblas.a
 lib/libptcblas.so.1
 lib/libptcblas.so
@@ -35,9 +35,9 @@ lib/libptf77blas.so
 lib/libtstatlas.a
 lib/libtstatlas.so.1
 lib/libtstatlas.so
-lib/libtstatlasthr.a
-lib/libtstatlasthr.so.1
-lib/libtstatlasthr.so
+lib/libtstatlas_r.a
+lib/libtstatlas_r.so.1
+lib/libtstatlas_r.so
 %%PORTDOCS%%share/doc/atlas/AtlasCredits.txt
 %%PORTDOCS%%share/doc/atlas/ChangeLog
 %%PORTDOCS%%share/doc/atlas/DirStruct.txt