diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 1f47851d..5c7397f4 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,7 +28,7 @@ jobs:
           # Note: Specifying the version of valgrind is not supported.
           # cargo-watch is supported by cargo-binstall (through quickinstall)
           - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cargo-udeps,cross,nextest,protoc,shellcheck,shfmt,valgrind,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch
-          - cargo-hack@0.5.17,cargo-llvm-cov@0.4.14,cargo-minimal-versions@0.1.5,parse-changelog@0.5.0,cargo-udeps@0.1.30,cross@0.2.4,nextest@0.9.11,protoc@3.21.4,shellcheck@0.8.0,shfmt@3.5.1,wasm-pack@0.10.3,wasmtime@0.39.1,mdbook@0.4.21,mdbook-linkcheck@0.7.6,cargo-watch@8.1.1
+          - cargo-hack@0.5.17,cargo-llvm-cov@0.4.14,cargo-minimal-versions@0.1.5,parse-changelog@0.5.0,cargo-udeps@0.1.32,cross@0.2.4,nextest@0.9.11,protoc@3.21.5,shellcheck@0.8.0,shfmt@3.5.1,wasm-pack@0.10.3,wasmtime@0.40.0,mdbook@0.4.21,mdbook-linkcheck@0.7.6,cargo-watch@8.1.1
           # Nextest supports basic version ranges as well
           - nextest@0.9
         include:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb2d832f..abae1500 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,10 @@ Note: In this file, do not use the hard wrap in the middle of a sentence for com
 
 ## [Unreleased]
 
+- Update `wasmtime@latest` to 0.40.0.
+- Update `cargo-udeps@latest` to 0.1.32.
+- Update `protoc@latest` to 3.21.5.
+
 ## [1.11.1] - 2022-08-13
 
 - Make installation that uses `cargo-binstall` robust. ([#19](https://github.com/taiki-e/install-action/pull/19), thanks @NobodyXu)
diff --git a/main.sh b/main.sh
index 74716911..fca8e255 100755
--- a/main.sh
+++ b/main.sh
@@ -188,7 +188,7 @@ for tool in "${tools[@]}"; do
             ;;
         cargo-udeps)
             # https://github.com/est31/cargo-udeps/releases
-            latest_version="0.1.30"
+            latest_version="0.1.32"
             repo="est31/${tool}"
             case "${version}" in
                 latest) version="${latest_version}" ;;
@@ -252,7 +252,7 @@ for tool in "${tools[@]}"; do
             ;;
         protoc)
             # https://github.com/protocolbuffers/protobuf/releases
-            latest_version="3.21.4"
+            latest_version="3.21.5"
             repo="protocolbuffers/protobuf"
             case "${version}" in
                 latest) version="${latest_version}" ;;
@@ -388,7 +388,7 @@ for tool in "${tools[@]}"; do
             ;;
         wasmtime)
             # https://github.com/bytecodealliance/wasmtime/releases
-            latest_version="0.39.1"
+            latest_version="0.40.0"
             repo="bytecodealliance/${tool}"
             case "${version}" in
                 latest) version="${latest_version}" ;;