diff --git a/.cirrus.yml b/.cirrus.yml
index 1e073d70..bdbfed53 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -9,7 +9,7 @@ env:
   RUSTDOCFLAGS: -D warnings
   TOOL: cargo
   # The MSRV
-  TOOLCHAIN: 1.56.1
+  TOOLCHAIN: 1.63
   ZFLAGS:
 
 # Tests that don't require executing the build binaries
@@ -140,23 +140,24 @@ task:
   matrix:
     - name: Linux aarch64
       arm_container:
-        image: rust:1.56
+        image: rust:1.63
       env:
         RUSTFLAGS: --cfg graviton -D warnings
         TARGET: aarch64-unknown-linux-gnu
     - name: Linux x86_64
       container:
-        image: rust:1.56
+        image: rust:1.63
       env:
         TARGET: x86_64-unknown-linux-gnu
     - name: Linux x86_64 musl
       container:
-        image: rust:1.56
+        image: rust:1.63
       env:
         TARGET: x86_64-unknown-linux-musl
   setup_script:
     - rustup target add $TARGET
-    - rustup component add clippy
+    - rustup toolchain install $TOOLCHAIN --profile minimal --target $TARGET
+    - rustup component add --toolchain $TOOLCHAIN clippy
   << : *TEST
   before_cache_script: rm -rf $CARGO_HOME/registry/index
 
@@ -176,7 +177,7 @@ task:
 # Tasks for cross-compiling, but no testing
 task:
   container:
-    image: rust:1.56
+    image: rust:1.63
   env:
     BUILD: check
     HOST: x86_64-unknown-linux-gnu
@@ -250,7 +251,7 @@ task:
 
 task:
   container:
-    image: rust:1.56
+    image: rust:1.63
   env:
     BUILD: check
   name: Redox x86_64
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d708ba72..4f7855d3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -11,6 +11,10 @@ This project adheres to [Semantic Versioning](https://semver.org/).
   (#[1662](https://github.com/nix-rust/nix/pull/1662))
 
 ### Changed
+
+- The MSRV is now 1.63
+  ([#1862](https://github.com/nix-rust/nix/pull/1862))
+
 ### Fixed
 ### Removed
 
diff --git a/Cargo.toml b/Cargo.toml
index c337127f..fb0e4cfd 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -3,7 +3,7 @@ name        = "nix"
 description = "Rust friendly bindings to *nix APIs"
 edition     = "2018"
 version     = "0.26.1"
-rust-version = "1.56"
+rust-version = "1.63"
 authors     = ["The nix-rust Project Developers"]
 repository  = "https://github.com/nix-rust/nix"
 license     = "MIT"
diff --git a/README.md b/README.md
index 2c42b905..97ca145f 100644
--- a/README.md
+++ b/README.md
@@ -89,7 +89,7 @@ Tier 3:
 
 ## Minimum Supported Rust Version (MSRV)
 
-nix is supported on Rust 1.56.1 and higher.  Its MSRV will not be
+nix is supported on Rust 1.63 and higher.  Its MSRV will not be
 changed in the future without bumping the major or minor version.
 
 ## Contributing