diff --git a/.travis.yml b/.travis.yml
index af14f92..acfe498 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -18,7 +18,7 @@ matrix:
 
     # Minimum Rust supported channel.
     - os: linux
-      rust: 1.36.0
+      rust: 1.39.0
       env: TARGET=x86_64-unknown-linux-gnu
 
 
diff --git a/README.md b/README.md
index bb1d8f2..65028c6 100644
--- a/README.md
+++ b/README.md
@@ -96,7 +96,7 @@ or Windows Terminal since Windows 10 1903).
 
 ### Via cargo
 
-If you have Rust 1.36 or higher, you can install `hexyl` from source via `cargo`:
+If you have Rust 1.39 or higher, you can install `hexyl` from source via `cargo`:
 ```
 cargo install hexyl
 ```