diff --git a/.github/workflows/code_coverage.yml b/.github/workflows/code_coverage.yml
index 6b88c85..e077b0c 100644
--- a/.github/workflows/code_coverage.yml
+++ b/.github/workflows/code_coverage.yml
@@ -16,7 +16,7 @@ jobs:
       options: --security-opt seccomp=unconfined
     steps:
       - name: Checkout repository
-        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
         with:
           persist-credentials: false
 
diff --git a/.github/workflows/daily_tests.yml b/.github/workflows/daily_tests.yml
index 71a37d3..1873b47 100644
--- a/.github/workflows/daily_tests.yml
+++ b/.github/workflows/daily_tests.yml
@@ -16,7 +16,7 @@ jobs:
           - nightly
     steps:
       - name: Checkout sources
-        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
 
       - name: Install toolchain
         uses: actions-rs/toolchain@16499b5e05bf2e26879000db0c1d13f7e13fa3af
diff --git a/.github/workflows/lints.yml b/.github/workflows/lints.yml
index 692b277..507fa5a 100644
--- a/.github/workflows/lints.yml
+++ b/.github/workflows/lints.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
 
       - name: Install stable toolchain
         uses: actions-rs/toolchain@16499b5e05bf2e26879000db0c1d13f7e13fa3af
diff --git a/.github/workflows/security_audit.yml b/.github/workflows/security_audit.yml
index d8cc215..55bba1a 100644
--- a/.github/workflows/security_audit.yml
+++ b/.github/workflows/security_audit.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
         with:
           persist-credentials: false
           ref: master
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d087011..d3e7d0b 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,13 +8,13 @@ jobs:
       matrix:
         rust:
           - stable
-          - 1.65.0 # MSRV
+          - 1.67.0 # MSRV
           - nightly
     
     runs-on: ubuntu-latest
     steps:
       - name: Checkout sources
-        uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+        uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
         with:
           persist-credentials: false
       
@@ -70,7 +70,7 @@ jobs:
         arch:
           - wasm32-unknown-unknown
     steps:
-      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
         with:
           persist-credentials: false
       - uses: actions-rs/toolchain@16499b5e05bf2e26879000db0c1d13f7e13fa3af
@@ -93,7 +93,7 @@ jobs:
           - armv7-unknown-linux-gnueabihf
           - mips64-unknown-linux-gnuabi64
     steps:
-      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9
+      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744
         with:
           persist-credentials: false
       - uses: actions-rs/toolchain@16499b5e05bf2e26879000db0c1d13f7e13fa3af
diff --git a/CHANGELOG.md b/CHANGELOG.md
index c1c91a6..c4373e8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,9 @@
+### TBD
+
+__Date:__ TBD
+
+- Bump MSRV to `1.67`.
+
 ### 0.6.7
 
 __Date:__ June 10, 2023.
diff --git a/Cargo.toml b/Cargo.toml
index 4909974..f8192a5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,7 @@ readme = "README.md"
 repository = "https://github.com/brycx/pasetors"
 documentation = "https://docs.rs/pasetors"
 license = "MIT"
-rust-version = "1.65.0" # Update CI test along with this.
+rust-version = "1.67.0" # Update CI test along with this.
 
 [package.metadata.docs.rs]
 all-features = true
diff --git a/README.md b/README.md
index 515f199..d29bd6c 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-![Tests](https://github.com/brycx/pasetors/workflows/Tests/badge.svg) [![Documentation](https://docs.rs/pasetors/badge.svg)](https://docs.rs/pasetors/) [![Crates.io](https://img.shields.io/crates/v/pasetors.svg)](https://crates.io/crates/pasetors) [![Safety Dance](https://img.shields.io/badge/unsafe-forbidden-success.svg)](https://github.com/rust-secure-code/safety-dance/) [![MSRV](https://img.shields.io/badge/MSRV-1.65.0-informational.svg)](https://img.shields.io/badge/MSRV-1.65.0-informational) [![codecov](https://codecov.io/gh/brycx/pasetors/branch/master/graph/badge.svg)](https://codecov.io/gh/brycx/pasetors)
+![Tests](https://github.com/brycx/pasetors/workflows/Tests/badge.svg) [![Documentation](https://docs.rs/pasetors/badge.svg)](https://docs.rs/pasetors/) [![Crates.io](https://img.shields.io/crates/v/pasetors.svg)](https://crates.io/crates/pasetors) [![Safety Dance](https://img.shields.io/badge/unsafe-forbidden-success.svg)](https://github.com/rust-secure-code/safety-dance/) [![MSRV](https://img.shields.io/badge/MSRV-1.67.0-informational.svg)](https://img.shields.io/badge/MSRV-1.67.0-informational) [![codecov](https://codecov.io/gh/brycx/pasetors/branch/master/graph/badge.svg)](https://codecov.io/gh/brycx/pasetors)
 
 ### PASETOrs
 
@@ -26,7 +26,7 @@ This library includes:
 This library has **not undergone any third-party security audit**. Usage is at **own risk**. 
 
 ### Minimum Supported Rust Version
-Rust 1.65.0 or later is supported however, the majority of testing happens with latest stable Rust.
+Rust 1.67.0 or later is supported however, the majority of testing happens with latest stable Rust.
 
 MSRV may be changed at any point and will not be considered a SemVer breaking change.