diff --git a/README.md b/README.md
index 3db43d58ede39644e218fc98939604c481fb9aa8..b0e4de15eefaf4dac8e91fe09d9624e49cf1c776 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ This is the Coq development of the [Iris Project](http://plv.mpi-sws.org/iris/).
 
 This version is known to compile with:
 
- - Coq 8.5
+ - Coq 8.5pl1
  - Ssreflect 1.6
 
 For development, better make sure you have a version of Ssreflect that includes