diff --git a/.github/.cspell/project-dictionary.txt b/.github/.cspell/project-dictionary.txt
index 40510a10..4fe10761 100644
--- a/.github/.cspell/project-dictionary.txt
+++ b/.github/.cspell/project-dictionary.txt
@@ -26,4 +26,5 @@ shellcheck
 shfmt
 udeps
 wasmtime
+watchexec
 xscale
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0300e2fe..a33791e2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -29,21 +29,21 @@ jobs:
           - ubuntu-20.04
           - ubuntu-22.04
         tool:
-          # cargo-watch is supported by cargo-binstall (through quickinstall)
+          # cargo-watch/watchexec-cli is supported by cargo-binstall (through quickinstall)
           # TODO: valgrind installation sometime hangs.
-          - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov
+          - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov,watchexec-cli
         include:
           # Note: Specifying the version of valgrind and cargo-binstall is not supported.
           - os: ubuntu-20.04
-            tool: cargo-hack@0.5.24,cargo-llvm-cov@0.5.3,cargo-minimal-versions@0.1.8,cargo-no-dev-deps@0.1.0,parse-changelog@0.5.2,cargo-udeps@0.1.35,cargo-valgrind@2.1.0,cargo-deny@0.13.5,cross@0.2.4,dprint@0.34.1,just@1.9.0,nextest@0.9.11,protoc@3.21.12,shellcheck@0.9.0,shfmt@3.6.0,wasm-pack@0.10.3,wasmtime@4.0.0,mdbook@0.4.25,mdbook-linkcheck@0.7.7,cargo-watch@8.1.1,grcov@0.8.13
+            tool: cargo-hack@0.5.24,cargo-llvm-cov@0.5.3,cargo-minimal-versions@0.1.8,cargo-no-dev-deps@0.1.0,parse-changelog@0.5.2,cargo-udeps@0.1.35,cargo-valgrind@2.1.0,cargo-deny@0.13.5,cross@0.2.4,dprint@0.34.1,just@1.9.0,nextest@0.9.11,protoc@3.21.12,shellcheck@0.9.0,shfmt@3.6.0,wasm-pack@0.10.3,wasmtime@4.0.0,mdbook@0.4.25,mdbook-linkcheck@0.7.7,cargo-watch@8.1.1,grcov@0.8.13,watchexec-cli@1.20.5
           - os: ubuntu-20.04
-            tool: cargo-hack@0.5,cargo-llvm-cov@0.5,cargo-minimal-versions@0.1,cargo-no-dev-deps@0.1,parse-changelog@0.5,cargo-udeps@0.1,cargo-valgrind@2.1,cargo-deny@0.13,cross@0.2,dprint@0.34,just@1.9,nextest@0.9,protoc@3.21,shellcheck@0.9,shfmt@3.5,wasm-pack@0.10,wasmtime@4.0,mdbook@0.4,mdbook-linkcheck@0.7,cargo-watch@8.1,grcov@0.8
+            tool: cargo-hack@0.5,cargo-llvm-cov@0.5,cargo-minimal-versions@0.1,cargo-no-dev-deps@0.1,parse-changelog@0.5,cargo-udeps@0.1,cargo-valgrind@2.1,cargo-deny@0.13,cross@0.2,dprint@0.34,just@1.9,nextest@0.9,protoc@3.21,shellcheck@0.9,shfmt@3.5,wasm-pack@0.10,wasmtime@4.0,mdbook@0.4,mdbook-linkcheck@0.7,cargo-watch@8.1,grcov@0.8,watchexec-cli@1.20
           - os: ubuntu-20.04
-            tool: cargo-valgrind@2,just@1,protoc@3,shfmt@3,wasmtime@4,cargo-watch@8
+            tool: cargo-valgrind@2,just@1,protoc@3,shfmt@3,wasmtime@4,cargo-watch@8,watchexec-cli@1
           - os: macos-11
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov,watchexec-cli
           - os: windows-2019
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov,watchexec-cli
     runs-on: ${{ matrix.os }}
     timeout-minutes: 60
     steps:
@@ -77,20 +77,20 @@ jobs:
           - rockylinux:8-minimal # glibc 2.28
         tool:
           # valgrind: installing snap to container is difficult...
-          - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov
+          - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-udeps,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov,watchexec-cli
         include:
           - container: ubuntu:22.04 # glibc 2.35
             # cargo-udeps depends on openssl 1.1
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov,watchexec-cli
           - container: fedora:latest # glibc 2.36 (as of fedora 37)
             # cargo-udeps depends on openssl 1.1
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,protoc,shellcheck,shfmt,wasm-pack,wasmtime,mdbook,mdbook-linkcheck,cargo-watch,grcov,watchexec-cli
           - container: centos:7 # glibc 2.17
-            # cargo-udeps,protoc,valgrind,wasmtime,mdbook-linkcheck,cargo-watch don't provide prebuilt binaries for musl host.
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,shellcheck,shfmt,wasm-pack,mdbook,cargo-binstall,grcov
+            # cargo-udeps,protoc,valgrind,wasmtime,mdbook-linkcheck,cargo-watch don't provide prebuilt binaries for musl or old glibc host.
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,shellcheck,shfmt,wasm-pack,mdbook,cargo-binstall,grcov,watchexec-cli
           - container: alpine:latest # musl 1.2.3 (as of alpine 3.17)
             # cargo-udeps,protoc,valgrind,wasmtime,mdbook-linkcheck,cargo-watch don't provide prebuilt binaries for musl host.
-            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,shellcheck,shfmt,wasm-pack,mdbook,cargo-binstall,grcov
+            tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,cargo-no-dev-deps,parse-changelog,cargo-valgrind,cargo-deny,cross,dprint,just,nextest,shellcheck,shfmt,wasm-pack,mdbook,cargo-binstall,grcov,watchexec-cli
     runs-on: ubuntu-latest
     timeout-minutes: 60
     container: ${{ matrix.container }}
diff --git a/main.sh b/main.sh
index db58056c..b0e229b5 100755
--- a/main.sh
+++ b/main.sh
@@ -241,22 +241,6 @@ install_cargo_binstall() {
         x cargo binstall -V
     fi
 }
-cargo_binstall() {
-    local tool="$1"
-    local version="$2"
-
-    info "install-action does not support ${tool}, fallback to cargo-binstall"
-
-    install_cargo_binstall
-
-    # By default, cargo-binstall enforce downloads over secure transports only.
-    # As a result, http will be disabled, and it will also set
-    # min tls version to be 1.2
-    case "${version}" in
-        latest) cargo binstall --force --no-confirm "${tool}" ;;
-        *) cargo binstall --force --no-confirm --version "${version}" "${tool}" ;;
-    esac
-}
 apt_update() {
     if type -P sudo &>/dev/null; then
         retry sudo apt-get -o Acquire::Retries=10 -qq update
@@ -430,6 +414,7 @@ if ! type -P jq &>/dev/null || ! type -P curl &>/dev/null || ! type -P tar &>/de
     esac
 fi
 
+unsupported_tools=()
 for tool in "${tools[@]}"; do
     if [[ "${tool}" == *"@"* ]]; then
         version="${tool#*@}"
@@ -443,9 +428,9 @@ for tool in "${tools[@]}"; do
     else
         version="latest"
     fi
-    info "installing ${tool}@${version}"
     case "${tool}" in
         protoc)
+            info "installing ${tool}@${version}"
             read_manifest "protoc" "${version}"
             # Copying files to /usr/local/include requires sudo, so do not use it.
             bin_dir="${HOME}/.install-action/bin"
@@ -480,6 +465,7 @@ for tool in "${tools[@]}"; do
             rm -rf "${tmp_dir}"
             ;;
         valgrind)
+            info "installing ${tool}@${version}"
             case "${version}" in
                 latest) ;;
                 *) warn "specifying the version of ${tool} is not supported yet by this action" ;;
@@ -496,6 +482,7 @@ for tool in "${tools[@]}"; do
             snap_install valgrind --classic
             ;;
         cargo-binstall)
+            info "installing ${tool}@${version}"
             case "${version}" in
                 latest) ;;
                 *) warn "specifying the version of ${tool} is not supported by this action" ;;
@@ -512,11 +499,15 @@ for tool in "${tools[@]}"; do
 
             # Use cargo-binstall fallback if tool is not available.
             if [[ ! -f "${manifest_dir}/${tool}.json" ]]; then
-                cargo_binstall "${tool}" "${version}"
-                echo
+                case "${version}" in
+                    latest) unsupported_tools+=("${tool}") ;;
+                    *) unsupported_tools+=("${tool}@${version}") ;;
+                esac
                 continue
             fi
 
+            info "installing ${tool}@${version}"
+
             # Pre-install
             case "${tool}" in
                 shellcheck)
@@ -543,3 +534,14 @@ for tool in "${tools[@]}"; do
     esac
     echo
 done
+
+if [[ ${#unsupported_tools[@]} -gt 0 ]]; then
+    IFS=$','
+    info "install-action does not support ${unsupported_tools[*]}; fallback to cargo-binstall"
+    IFS=$'\n\t'
+    install_cargo_binstall
+    # By default, cargo-binstall enforce downloads over secure transports only.
+    # As a result, http will be disabled, and it will also set
+    # min tls version to be 1.2
+    cargo binstall --force --no-confirm "${unsupported_tools[@]}"
+fi