diff --git a/README.md b/README.md
index fee64d8b..3bc96009 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ A list of software, SaaS, PaaS, IaaS etc offerings that have free tiers for devs
 
 # Search
 
-  * https://swiftype.com – hosted search solution (API and crawler). Free for a single search engine with up to 1000 documents.
+  * https://swiftype.com – hosted search solution (API and crawler). Free for a single search engine with up to 1000 documents. Free upgrade to Premuim level for open-source projects.
 
 # PaaS