diff --git a/README.md b/README.md
index 0eb2d6e3..7408705f 100644
--- a/README.md
+++ b/README.md
@@ -56,7 +56,7 @@ implementations of graphics functions, and the addition of missing libraries.
 ## Dependencies
 
 To compile for the PSP, you will need a Rust **nightly** version equal to or
-later than `2022-06-11` and the `rust-src` component. Please install Rust using
+later than `2022-09-04` and the `rust-src` component. Please install Rust using
 https://rustup.rs/
 
 Use the following if you are new to Rust. (Feel free to set an override manually
diff --git a/cargo-psp/src/main.rs b/cargo-psp/src/main.rs
index 9482247c..4c77a48e 100644
--- a/cargo-psp/src/main.rs
+++ b/cargo-psp/src/main.rs
@@ -120,13 +120,13 @@ impl fmt::Display for CommitDate {
     }
 }
 
-// Minimum 2022-06-11, remember to update both commit date and version too,
+// Minimum 2022-09-04, remember to update both commit date and version too,
 // below. Note that the `day` field lags by one day, as the toolchain always
 // contains the previous days' nightly rustc.
 const MINIMUM_COMMIT_DATE: CommitDate = CommitDate {
     year: 2022,
-    month: 06,
-    day: 10,
+    month: 09,
+    day: 04,
 };
 const MINIMUM_RUSTC_VERSION: Version = Version {
     major: 1,
diff --git a/ci/concourse/build-rust-macos.yml b/ci/concourse/build-rust-macos.yml
index 9d3293dd..0eff300a 100644
--- a/ci/concourse/build-rust-macos.yml
+++ b/ci/concourse/build-rust-macos.yml
@@ -1,7 +1,7 @@
 platform: darwin
 
 params:
-  RUSTUP_TOOLCHAIN: nightly-2022-06-11
+  RUSTUP_TOOLCHAIN: nightly-2022-09-04
 
 inputs:
   - name: repo
diff --git a/ci/concourse/build-rust.yml b/ci/concourse/build-rust.yml
index d2039ef2..cfad8df9 100644
--- a/ci/concourse/build-rust.yml
+++ b/ci/concourse/build-rust.yml
@@ -11,7 +11,7 @@ image_resource:
     tag: 1.44-slim
 
 params:
-  RUSTUP_TOOLCHAIN: nightly-2022-06-11
+  RUSTUP_TOOLCHAIN: nightly-2022-09-04
 
 inputs:
   - name: repo