diff --git a/.travis.yml b/.travis.yml
index a068748..929230d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,7 +5,7 @@ rust:
   - stable
   - beta
   - nightly
-  - 1.23.0
+  - 1.20.0
 os:
   - linux
   - osx
diff --git a/README.markdown b/README.markdown
index f282a07..5f413b9 100644
--- a/README.markdown
+++ b/README.markdown
@@ -2,7 +2,7 @@
 
 **Still fairly experimental!**
 
-Minimum Rust version: 1.23
+Minimum Rust version: 1.20
 
 [![Build Status](https://travis-ci.org/Gekkio/imgui-rs.svg?branch=master)](https://travis-ci.org/Gekkio/imgui-rs)
 [![Latest release on crates.io](https://meritbadge.herokuapp.com/imgui)](https://crates.io/crates/imgui)