diff --git a/.travis.yml b/.travis.yml
index 31b7d82..3d4d433 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,6 @@
 language: rust
 
 rust:
-    - "1.42.0"
     - "1.43.1"
     - "1.44.1"
     - "1.45.2"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95aa67d..a2b6a23 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,12 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 
+## [Unreleased]
+
+### Changed
+- The minimal required Rust version is 1.43.
+
+
 ## [0.14.0] - 2020-10-27
 
 ### Added
diff --git a/README.md b/README.md
index a37af17..0e9cc55 100644
--- a/README.md
+++ b/README.md
@@ -80,7 +80,7 @@ man =(curl -sSf "https://raw.githubusercontent.com/breard-r/acmed/master/man/en/
 
 ## Build from source
 
-In order to compile ACMEd, you will need the [Rust](https://www.rust-lang.org/) compiler and its package manager, Cargo. The minimal required Rust version is 1.42.0, although it is recommended to use the latest stable one.
+In order to compile ACMEd, you will need the [Rust](https://www.rust-lang.org/) compiler and its package manager, Cargo. The minimal required Rust version is 1.43, although it is recommended to use the latest stable one.
 
 ACMEd depends OpenSSL 1.1.0 or higher.
 
diff --git a/acmed/Cargo.toml b/acmed/Cargo.toml
index 47e66d4..50d1219 100644
--- a/acmed/Cargo.toml
+++ b/acmed/Cargo.toml
@@ -27,7 +27,7 @@ clap = "2.32"
 glob = "0.3"
 handlebars = "3.0"
 log = "0.4"
-nom = "5.0"
+nom = "6.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 toml = "0.5"