diff --git a/cjdns/Makefile b/cjdns/Makefile
index d69386e..d55c6fd 100644
--- a/cjdns/Makefile
+++ b/cjdns/Makefile
@@ -18,7 +18,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=cjdns
 PKG_VERSION:=v21.1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://codeload.github.com/cjdelisle/cjdns/tar.gz/$(PKG_NAME)-$(PKG_VERSION)?
diff --git a/cjdns/patches/020-prefer-python2.patch b/cjdns/patches/020-prefer-python2.patch
new file mode 100644
index 0000000..5bb8624
--- /dev/null
+++ b/cjdns/patches/020-prefer-python2.patch
@@ -0,0 +1,11 @@
+--- a/node_build/FindPython.js
++++ b/node_build/FindPython.js
+@@ -23,7 +23,7 @@ var Fs = require('fs');
+ // de-prioritize because the testing script accepts ANY python3 version
+ // (as of this writing, we don't know what python3 versions actually work)
+ // whereas we know that python2.7 is the only working python2 version.
+-var PYTHONS = ["python3.7", "python3", "python2.7", "python2", "python"];
++var PYTHONS = ["python2", "python2.7", "python3.7", "python3.8", "python3.9", "python3"]
+ 
+ var SCRIPT = [
+     'import sys',