Makefile: update waf to 1.8.20

diff --git a/Makefile b/Makefile
index b8d6c62..b50e258 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -5,7 +5,7 @@ checkwaf:
        @[ -f waf ] || make getwaf
 
 getwaf:
-       curl https://waf.io/waf-1.8.14 > waf
+       curl https://waf.io/waf-1.8.20 > waf
        @chmod +x waf
 
 expandwaf: