diff --git a/Makefile b/Makefile
index 69c47f6b7..54e03eb78 100644
--- a/Makefile
+++ b/Makefile
@@ -99,7 +99,7 @@ OBJS = kernel/version_$(GIT_REV).o
 # is just a symlink to your actual ABC working directory, as 'make mrproper'
 # will remove the 'abc' directory and you do not want to accidentally
 # delete your work on ABC..
-ABCREV = 6283c5d99b06
+ABCREV = f6838749f234
 ABCPULL = 1
 ABCURL ?= https://bitbucket.org/alanmi/abc
 ABCMKARGS = CC="$(CXX)" CXX="$(CXX)" ABC_USE_LIBSTDCXX=1