diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fb06a10d..5f09ce63 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,11 +24,13 @@ jobs:
       matrix:
         os:
           - ubuntu-18.04
-          - macos-10.15
         tool:
-          - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross,shellcheck,shfmt
+          # NOTE: Specifying the version of valgrind is not supported.
+          - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross,shellcheck,shfmt,valgrind
           - cargo-hack@0.5.10,cargo-llvm-cov@0.1.15,cargo-minimal-versions@0.1.1,parse-changelog@0.4.6,cross@0.2.1,shellcheck@0.8.0,shfmt@3.4.2
         include:
+          - os: macos-10.15
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross,shellcheck,shfmt
           - os: windows-2019
             tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog
           - os: windows-2019
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5886fab7..56a3afdf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,8 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+- Support `valgrind`.
+
 ## [1.0.3] - 2022-01-06
 
 - Update `cargo-llvm-cov@latest` to 0.1.15.
diff --git a/README.md b/README.md
index d9fd115d..f7bfa39e 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,7 @@ https://spdx.org/licenses
 | [**cross**](https://github.com/rust-embedded/cross) | `~/.cargo/bin` | [GitHub Releases](https://github.com/rust-embedded/cross/releases) | Linux, macOS, Windows | [Apache-2.0](https://github.com/rust-embedded/cross/blob/HEAD/LICENSE-APACHE) OR [MIT](https://github.com/rust-embedded/cross/blob/HEAD/LICENSE-MIT) |
 | [**shellcheck**](https://www.shellcheck.net) | `/usr/local/bin` | [GitHub Releases](https://github.com/koalaman/shellcheck/releases) | Linux, macOS | [GPL-3.0-or-later](https://github.com/koalaman/shellcheck/blob/HEAD/LICENSE) |
 | [**shfmt**](https://github.com/mvdan/sh) | `/usr/local/bin` | [GitHub Releases](https://github.com/mvdan/sh/releases) | Linux, macOS | [BSD-3-Clause](https://github.com/mvdan/sh/blob/HEAD/LICENSE) |
+| [**valgrind**](https://valgrind.org) | `/snap/bin` | [snap](https://snapcraft.io/install/valgrind/ubuntu) | Linux | [GPL-2.0-or-later](https://valgrind.org/docs/manual/license.gpl.html) |
 
 <!-- TODO:
 | [**cmake**](https://cmake.org) | | [GitHub Releases](https://github.com/Kitware/CMake/releases) | Linux, macOS, Windows | [BSD-3-Clause](https://github.com/Kitware/CMake/blob/HEAD/Copyright.txt) |
diff --git a/main.sh b/main.sh
index 00b43207..6d190751 100755
--- a/main.sh
+++ b/main.sh
@@ -136,6 +136,23 @@ for tool in "${tools[@]}"; do
             retry curl --proto '=https' --tlsv1.2 -fsSL --retry 10 --retry-connrefused -o /usr/local/bin/shfmt "${url}"
             chmod +x /usr/local/bin/shfmt
             ;;
+        valgrind)
+            case "${OSTYPE}" in
+                linux*) ;;
+                darwin* | cygwin* | msys*) bail "${tool} for non-linux is not supported yet by this action" ;;
+                *) bail "unsupported OSTYPE '${OSTYPE}' for ${tool}" ;;
+            esac
+            case "${version}" in
+                latest) ;;
+                *) warn "specifying the version of ${tool} is not supported yet by this action" ;;
+            esac
+            sudo apt-get -o Acquire::Retries=10 -qq update
+            # libc6-dbg is needed to run Valgrind
+            sudo apt-get -o Acquire::Retries=10 -qq -o Dpkg::Use-Pty=0 install -y libc6-dbg
+            # Use snap to install the latest Valgrind
+            # https://snapcraft.io/install/valgrind/ubuntu
+            sudo snap install valgrind --classic
+            ;;
         *) bail "unsupported tool '${tool}'" ;;
     esac
 
diff --git a/tools/publish.sh b/tools/publish.sh
index 0dece936..a7ccd4d8 100755
--- a/tools/publish.sh
+++ b/tools/publish.sh
@@ -57,6 +57,7 @@ tools=(
     cross
     shellcheck
     shfmt
+    valgrind
 )
 
 (