diff --git a/Cargo.lock b/Cargo.lock
index 4795851..def0016 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1,3 +1,5 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
 [[package]]
 name = "MacTypes-sys"
 version = "2.1.0"
diff --git a/README.md b/README.md
index 07afa19..ad4e905 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,7 @@ The Visual Studio 2017 Redistributable is required to run these builds.
 
 ## Building
 
-Requires Rust stable version 1.31.0 or newer to build.
+Requires Rust stable version 1.34.1 or newer to build.
 
 Compile and run:
 ```bash
diff --git a/appveyor.yml b/appveyor.yml
index e69d66b..6e4d820 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -21,7 +21,7 @@ build_script:
 
     appveyor AddMessage "Platform rust: %RUST_INSTALL%"
 
-    appveyor DownloadFile "https://static.rust-lang.org/dist/rust-1.31.0-%RUST_INSTALL%.exe" -FileName rust-install.exe
+    appveyor DownloadFile "https://static.rust-lang.org/dist/rust-1.34.1-%RUST_INSTALL%.exe" -FileName rust-install.exe
 
     "./rust-install.exe" /VERYSILENT /NORESTART /DIR="C:\Rust\"