diff --git a/Makefile b/Makefile
index d9eccf1dd..2868ba1e5 100644
--- a/Makefile
+++ b/Makefile
@@ -94,7 +94,7 @@ OBJS = kernel/version_$(GIT_REV).o
 # is just a symlink to your actual ABC working directory, as 'make mrproper'
 # will remove the 'abc' directory and you do not want to accidentally
 # delete your work on ABC..
-ABCREV = e79576e10d72
+ABCREV = efbf7f13ea9e
 ABCPULL = 1
 ABCURL ?= https://bitbucket.org/alanmi/abc
 ABCMKARGS = CC="$(CXX)" CXX="$(CXX)"