diff --git a/media-libs/alembic/alembic-1.7.8.recipe b/media-libs/alembic/alembic-1.7.9.recipe
similarity index 97%
rename from media-libs/alembic/alembic-1.7.8.recipe
rename to media-libs/alembic/alembic-1.7.9.recipe
index 073c1d65e..3af1851b6 100644
--- a/media-libs/alembic/alembic-1.7.8.recipe
+++ b/media-libs/alembic/alembic-1.7.9.recipe
@@ -22,9 +22,9 @@ COPYRIGHT="2009-2016 Sony Pictures Imageworks
 	2016-2018 Blizzard Entertainment, Inc.
 	2018 J Cube, Inc."
 LICENSE="ALEMBIC"
-REVISION="2"
+REVISION="1"
 SOURCE_URI="https://github.com/alembic/alembic/archive/$portVersion.tar.gz"
-CHECKSUM_SHA256="119e2cbac2b862880018e756da2219171d1e9ae7aa0ef7dc7c216d678384808e"
+CHECKSUM_SHA256="04012fb37c02fd1ba8e4d4f37f5b1e7a3d78151c6368718c4be07f89a99c8148"
 SOURCE_FILENAME="alembic-$portVersion.tar.gz"
 PATCHES="alembic-$portVersion.patchset"
 
diff --git a/media-libs/alembic/patches/alembic-1.7.8.patchset b/media-libs/alembic/patches/alembic-1.7.9.patchset
similarity index 64%
rename from media-libs/alembic/patches/alembic-1.7.8.patchset
rename to media-libs/alembic/patches/alembic-1.7.9.patchset
index 080ade5fa..f962b7ff5 100644
--- a/media-libs/alembic/patches/alembic-1.7.8.patchset
+++ b/media-libs/alembic/patches/alembic-1.7.9.patchset
@@ -1,4 +1,4 @@
-From 7ecb7287671547f607870da8b7585a916308f5b9 Mon Sep 17 00:00:00 2001
+From 4272a37788d699419ae66d232e568317d7e690e5 Mon Sep 17 00:00:00 2001
 From: =?UTF-8?q?Zolt=C3=A1n=20Mizsei?= <zmizsei@extrowerk.com>
 Date: Sat, 31 Mar 2018 08:49:25 +0200
 Subject: Haiku build fixes
@@ -45,5 +45,29 @@ index f163173..c5a2a27 100644
  {
  
 -- 
-2.16.4
+2.19.0
+
+
+From 491cdf4b419274486e4937032b710ae25b14957c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Zolt=C3=A1n=20Mizsei?= <zmizsei@extrowerk.com>
+Date: Tue, 18 Sep 2018 21:46:33 +0200
+Subject: Build fix
+
+
+diff --git a/lib/Alembic/Ogawa/IStreams.cpp b/lib/Alembic/Ogawa/IStreams.cpp
+index 1c1e613..7e73cae 100644
+--- a/lib/Alembic/Ogawa/IStreams.cpp
++++ b/lib/Alembic/Ogawa/IStreams.cpp
+@@ -38,7 +38,8 @@
+ #include <stdexcept>
+ 
+ 
+-#if defined (__unix__) || (defined (__APPLE__) && defined (__MACH__))
++#if defined (__unix__) || defined (__HAIKU__) || \
++	(defined (__APPLE__) && defined (__MACH__))
+ 
+     #include <sys/mman.h>
+     #include <sys/stat.h>
+-- 
+2.19.0