diff --git a/Makefile b/Makefile
index ef838624a..2db6612a7 100644
--- a/Makefile
+++ b/Makefile
@@ -106,7 +106,7 @@ OBJS = kernel/version_$(GIT_REV).o
 # is just a symlink to your actual ABC working directory, as 'make mrproper'
 # will remove the 'abc' directory and you do not want to accidentally
 # delete your work on ABC..
-ABCREV = f23ea8e
+ABCREV = 6df1396
 ABCPULL = 1
 ABCURL ?= https://github.com/berkeley-abc/abc
 ABCMKARGS = CC="$(CXX)" CXX="$(CXX)" ABC_USE_LIBSTDCXX=1