diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index dc9e5279..903cd7ca 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -26,11 +26,11 @@ jobs:
           - ubuntu-18.04
         tool:
           # NOTE: Specifying the version of valgrind and wasm-pack is not supported.
-          - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross,shellcheck,shfmt,valgrind,wasm-pack
-          - 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
+          - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross,shellcheck,shfmt,valgrind,wasm-pack,wasmtime
+          - 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,wasmtime@0.33.0
         include:
           - os: macos-10.15
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross,shellcheck,shfmt,wasm-pack
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross,shellcheck,shfmt,wasm-pack,wasmtime
           - os: windows-2019
             tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross
     runs-on: ${{ matrix.os }}
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 45771f11..34e0d350 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,7 +10,7 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
-- Support `valgrind` and `wasm-pack`.
+- Support `valgrind`, `wasm-pack`, and `wasmtime`.
 
 ## [1.0.3] - 2022-01-06
 
diff --git a/README.md b/README.md
index dce8ac1f..73f95ae6 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,7 @@ https://spdx.org/licenses
 | [**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) |
 | [**wasm-pack**](https://github.com/rustwasm/wasm-pack) | `~/.cargo/bin` | [GitHub Releases](https://github.com/rustwasm/wasm-pack/releases) | Linux, macOS | [Apache-2.0](https://github.com/rustwasm/wasm-pack/blob/HEAD/LICENSE-APACHE) OR [MIT](https://github.com/rustwasm/wasm-pack/blob/HEAD/LICENSE-MIT) |
+| [**wasmtime**](https://github.com/bytecodealliance/wasmtime) | `~/.cargo/bin` | [GitHub Releases](https://github.com/bytecodealliance/wasmtime/releases) | Linux, macOS | [Apache-2.0 WITH LLVM-exception](https://github.com/bytecodealliance/wasmtime/blob/HEAD/LICENSE) |
 
 <!-- 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 d8725ba1..b8c3c88e 100755
--- a/main.sh
+++ b/main.sh
@@ -162,6 +162,23 @@ for tool in "${tools[@]}"; do
             esac
             retry curl --proto '=https' --tlsv1.2 -fsSL --retry 10 --retry-connrefused https://rustwasm.github.io/wasm-pack/installer/init.sh | sh
             ;;
+        wasmtime)
+            # https://github.com/bytecodealliance/wasmtime/releases
+            latest_version="0.33.0"
+            repo="bytecodealliance/wasmtime"
+            case "${OSTYPE}" in
+                linux*) target="x86_64-linux" ;;
+                darwin*) target="x86_64-macos" ;;
+                cygwin* | msys*) bail "${tool} for windows is not supported yet by this action" ;;
+                *) bail "unsupported OSTYPE '${OSTYPE}' for ${tool}" ;;
+            esac
+            case "${version}" in
+                latest) version="${latest_version}" ;;
+            esac
+            url="https://github.com/bytecodealliance/wasmtime/releases/download/v${version}/wasmtime-v${version}-${target}.tar.xz"
+            retry curl --proto '=https' --tlsv1.2 -fsSL --retry 10 --retry-connrefused "${url}" \
+                | tar xJf - --strip-components 1 -C ~/.cargo/bin "wasmtime-v${version}-${target}/wasmtime"
+            ;;
         *) bail "unsupported tool '${tool}'" ;;
     esac
 
diff --git a/tools/publish.sh b/tools/publish.sh
index db0d7355..d90ceb87 100755
--- a/tools/publish.sh
+++ b/tools/publish.sh
@@ -59,6 +59,7 @@ tools=(
     shfmt
     valgrind
     wasm-pack
+    wasmtime
 )
 
 (