diff --git a/.travis.yml b/.travis.yml
index f0705de..287862d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -23,7 +23,7 @@ matrix:
       script:
         - ci/script-rust.sh
     - language: rust
-      rust: 1.40.0
+      rust: 1.42.0
       script:
         - ci/script-rust.sh
     - language: node_js
diff --git a/guide/install-manual.md b/guide/install-manual.md
index 2fd7f09..9df65ba 100644
--- a/guide/install-manual.md
+++ b/guide/install-manual.md
@@ -48,7 +48,7 @@ $ sudo apt-get install \
                tzdata
 ```
 
-Next, you need Rust 1.40+ and Cargo. The easiest way to install them is by
+Next, you need Rust 1.42+ and Cargo. The easiest way to install them is by
 following the instructions at [rustup.rs](https://www.rustup.rs/).
 
 Finally, building the UI requires [yarn](https://yarnpkg.com/en/).
diff --git a/scripts/script-functions.sh b/scripts/script-functions.sh
index d2b4a7b..0faec02 100755
--- a/scripts/script-functions.sh
+++ b/scripts/script-functions.sh
@@ -40,7 +40,7 @@ fi
 NODE_MIN_VERSION="10"
 YARN_MIN_VERSION="1.0"
 CARGO_MIN_VERSION="0.2"
-RUSTC_MIN_VERSION="1.40"
+RUSTC_MIN_VERSION="1.42"
 
 normalizeDirPath()
 {