diff --git a/.travis.yml b/.travis.yml
index 9d4d3f7bf..a6c981934 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@ rust:
 - nightly
 - beta
 - stable
-- 1.18.0
+- 1.20.0
 branches:
   only:
     - staging
diff --git a/README.md b/README.md
index 7569d3b83..a5193bcc2 100644
--- a/README.md
+++ b/README.md
@@ -67,7 +67,7 @@ Please see [the benchmark](benches/bench.rs) for a bigger (and useful) example.
 
 ### Required Rust version
 
-`1.18 stable`
+`1.20 stable`
 
 ## Features
 
diff --git a/src/res/data.rs b/src/res/data.rs
index 6f277d666..186335d06 100644
--- a/src/res/data.rs
+++ b/src/res/data.rs
@@ -161,7 +161,7 @@ where
     }
 }
 
-/// Allows to fetch a resource in a system mutably.
+/// Allows to fetch a resource in a system immutably.
 /// **This will panic if the resource does not exist.**
 /// Usage of `Read` or `Option<Read>` is therefore recommended.
 ///