diff --git a/common b/common
index 3cb34f6b6..64f6ee85f 160000
--- a/common
+++ b/common
@@ -1 +1 @@
-Subproject commit 3cb34f6b6898d5fe48afbc62e35fdd81802613d6
+Subproject commit 64f6ee85f8e7c9d6627f0fe8777eac2e11dbab8a
diff --git a/common-rules.mk b/common-rules.mk
index b2e8ead2a..4df1e33f1 100644
--- a/common-rules.mk
+++ b/common-rules.mk
@@ -36,9 +36,6 @@ CLEANFILES += *.cmi *.cmo *.cma *.cmx *.cmxa dll*.so *.a
 # OCaml -annot files (used for displaying types in some IDEs).
 CLEANFILES += *.annot
 
-# OCaml oUnit generated files.
-CLEANFILES += oUnit-*.cache oUnit-*.log
-
 # Manual pages - these are all generated from *.pod, so the
 # pages themselves should all be removed by 'make clean'.
 CLEANFILES += *.1 *.3 *.5 *.8
diff --git a/docs/guestfs-building.pod b/docs/guestfs-building.pod
index af1443730..08e6ad1f8 100644
--- a/docs/guestfs-building.pod
+++ b/docs/guestfs-building.pod
@@ -295,10 +295,6 @@ Optional.  Used by L<virt-log(1)> to parse Windows Event Log files.
 
 Optional.  For localizing OCaml virt tools.
 
-=item ocaml-ounit E<ge> 2.0.0
-
-Optional.  For testing the common OCaml modules.
-
 =item Perl C<Module::Build> E<ge> 0.19
 
 =item Perl C<Test::More>
diff --git a/m4/guestfs-ocaml.m4 b/m4/guestfs-ocaml.m4
index b36ea122d..10d443408 100644
--- a/m4/guestfs-ocaml.m4
+++ b/m4/guestfs-ocaml.m4
@@ -181,15 +181,6 @@ if test "x$enable_daemon" = "xyes"; then
     fi
 fi
 
-# oUnit is optional, used by some tests in common/mlstdutils (that we
-# should replace with regular tests one day).  If used, oUnit >= 2 is
-# required.
-if test "x$OCAML_PKG_ounit2" != "xno"; then
-    AC_CHECK_OCAML_MODULE(ounit_is_v2,[OUnit.OUnit2],OUnit2,[+ounit2])
-fi
-AM_CONDITIONAL([HAVE_OCAML_PKG_OUNIT],
-               [test "x$OCAML_PKG_ounit2" != "xno" && test "x$ounit_is_v2" != "xno"])
-
 dnl Flags we want to pass to every OCaml compiler call.
 OCAML_WARN_ERROR="-warn-error +C+D+E+F+L+M+P+S+U+V+Y+Z+X+52-3-6 -w -6"
 AC_SUBST([OCAML_WARN_ERROR])