diff --git a/.github/workflows/analysis.yml b/.github/workflows/analysis.yml
index cff15484676..d5a59ef35b9 100644
--- a/.github/workflows/analysis.yml
+++ b/.github/workflows/analysis.yml
@@ -17,7 +17,7 @@ env:
   # We can pin the version if nightly is too unstable.
   # Otherwise, we test against the latest version.
   RUST_NIGHTLY_TOOLCHAIN: nightly
-  RUST_SCRIPT_NIGHTLY_TOOLCHAIN: nightly-2024-05-22
+  RUST_SCRIPT_NIGHTLY_TOOLCHAIN: nightly
 
 jobs:
   rustfmt:
diff --git a/.github/workflows/fips-bindings-generator.yml b/.github/workflows/fips-bindings-generator.yml
index 335546732bc..550d420d31b 100644
--- a/.github/workflows/fips-bindings-generator.yml
+++ b/.github/workflows/fips-bindings-generator.yml
@@ -14,7 +14,7 @@ env:
   # We can pin the version if nightly is too unstable.
   # Otherwise, we test against the latest version.
   RUST_NIGHTLY_TOOLCHAIN: nightly
-  RUST_SCRIPT_NIGHTLY_TOOLCHAIN: nightly-2024-05-22
+  RUST_SCRIPT_NIGHTLY_TOOLCHAIN: nightly
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref_name }}
diff --git a/.github/workflows/pregen-bindings.yml b/.github/workflows/pregen-bindings.yml
index 62c34c35a4c..ba8f82dda4f 100644
--- a/.github/workflows/pregen-bindings.yml
+++ b/.github/workflows/pregen-bindings.yml
@@ -17,7 +17,7 @@ env:
   # We can pin the version if nightly is too unstable.
   # Otherwise, we test against the latest version.
   RUST_NIGHTLY_TOOLCHAIN: nightly
-  RUST_SCRIPT_NIGHTLY_TOOLCHAIN: nightly-2024-05-22
+  RUST_SCRIPT_NIGHTLY_TOOLCHAIN: nightly
   GOPROXY: https://proxy.golang.org,direct
 jobs:
   sys-bindings:
diff --git a/.github/workflows/sys-bindings-generator.yml b/.github/workflows/sys-bindings-generator.yml
index 54d124e18ec..6fc002d614d 100644
--- a/.github/workflows/sys-bindings-generator.yml
+++ b/.github/workflows/sys-bindings-generator.yml
@@ -14,7 +14,7 @@ env:
   # We can pin the version if nightly is too unstable.
   # Otherwise, we test against the latest version.
   RUST_NIGHTLY_TOOLCHAIN: nightly
-  RUST_SCRIPT_NIGHTLY_TOOLCHAIN: nightly-2024-05-22
+  RUST_SCRIPT_NIGHTLY_TOOLCHAIN: nightly
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref_name }}
diff --git a/aws-lc-rs/util/process-criterion-csv.rs b/aws-lc-rs/util/process-criterion-csv.rs
index d308c2d9388..b481e354ea7 100755
--- a/aws-lc-rs/util/process-criterion-csv.rs
+++ b/aws-lc-rs/util/process-criterion-csv.rs
@@ -1,4 +1,4 @@
-#!/usr/bin/env -S cargo +nightly-2024-05-22 -Zscript
+#!/usr/bin/env -S cargo +nightly -Zscript
 ---cargo
 [dependencies]
 clap = { version = "4.0.29", features = ["derive"] }
diff --git a/scripts/tools/cargo-dig.rs b/scripts/tools/cargo-dig.rs
index 49e19894025..7c4767732bc 100755
--- a/scripts/tools/cargo-dig.rs
+++ b/scripts/tools/cargo-dig.rs
@@ -1,4 +1,4 @@
-#!/usr/bin/env -S cargo +nightly-2024-05-22 -Zscript
+#!/usr/bin/env -S cargo +nightly -Zscript
 ---cargo
 [dependencies]
 toml = "0.8"
diff --git a/scripts/tools/semver.rs b/scripts/tools/semver.rs
index 3a38dfb62bf..e12b6c970b5 100755
--- a/scripts/tools/semver.rs
+++ b/scripts/tools/semver.rs
@@ -1,4 +1,4 @@
-#!/usr/bin/env -S cargo +nightly-2024-05-22 -Zscript
+#!/usr/bin/env -S cargo +nightly -Zscript
 ---cargo
 [dependencies]
 clap = { version = "4", features = ["derive"] }
diff --git a/scripts/tools/target-platform.rs b/scripts/tools/target-platform.rs
index 2e7042e240b..35e87e8e1c9 100755
--- a/scripts/tools/target-platform.rs
+++ b/scripts/tools/target-platform.rs
@@ -1,4 +1,4 @@
-#!/usr/bin/env -S cargo +nightly-2024-05-22 -Zscript
+#!/usr/bin/env -S cargo +nightly -Zscript
 
 // Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0 OR ISC