diff --git a/bootstrap b/bootstrap
index 00ef725a..ed10c288 100755
--- a/bootstrap
+++ b/bootstrap
@@ -6,8 +6,8 @@ export LC_ALL=
 FOUND=
 NEEDED=
 
-MMARK_VERSION=2.2.30
-XML2RFC_VERSION=2.46.0
+MMARK_VERSION=2.2.46
+XML2RFC_VERSION=3.27.0
 XSLTPROC_VERSION=1.1.0
 XMLLINT_VERSION=20903
 
diff --git a/tools.mak b/tools.mak
index 2d3dd4d6..572a540f 100644
--- a/tools.mak
+++ b/tools.mak
@@ -19,7 +19,7 @@ mmark_$(MMARK_VERSION)_$(MMARK_OS)_$(MMARK_MACHINE).tgz:
 	$(call download,https://github.com/mmarkdown/mmark/releases/download/v$(MMARK_VERSION)/mmark_$(MMARK_VERSION)_$(MMARK_OS)_$(MMARK_MACHINE).tgz)
 
 mmark: mmark_$(MMARK_VERSION)_$(MMARK_OS)_$(MMARK_MACHINE).tgz
-	tar xvzf $^
+	tar xvzf $^ --exclude=LICENSE --exclude=README.md
 	touch $@
 
 .buildmmark: mmark