diff --git a/lib/asn1/Makefile.am b/lib/asn1/Makefile.am
index 2bb083a08..e91e0a2c6 100644
--- a/lib/asn1/Makefile.am
+++ b/lib/asn1/Makefile.am
@@ -609,20 +609,21 @@ test_asn1_files: asn1_compile$(EXEEXT) $(srcdir)/test.asn1
 	./asn1_compile$(EXEEXT) --sequence=TESTSeqOf $(srcdir)/test.asn1 test_asn1 || (rm -f test_asn1_files ; exit 1)
 
 EXTRA_DIST =		\
+	CMS.asn1	\
 	asn1_err.et	\
 	canthandle.asn1	\
-	CMS.asn1	\
 	digest.asn1	\
 	k5.asn1		\
 	kx509.asn1	\
-	test.asn1	\
-	setchgpw2.asn1	\
 	pkcs12.asn1	\
 	pkcs8.asn1	\
 	pkcs9.asn1	\
 	pkinit.asn1	\
 	rfc2459.asn1	\
-	test.gen
+	setchgpw2.asn1	\
+	test.asn1	\
+	test.gen	\
+	version-script.map
 
 $(srcdir)/der-protos.h:
 	cd $(srcdir) && perl ../../cf/make-proto.pl -q -P comment -o der-protos.h $(dist_libnasn1_la_SOURCES) || rm -f der-protos.h
diff --git a/lib/asn1/version-script.map b/lib/asn1/version-script.map
new file mode 100644
index 000000000..67f9ff098
--- /dev/null
+++ b/lib/asn1/version-script.map
@@ -0,0 +1,6 @@
+# Export everything, but put a tag on is so that we make ourself incompatible with older versions
+
+HEIMDAL_ASN1_1.0 {
+	global:
+		*;
+};