diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 399f2bbc..fb06a10d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,16 +24,15 @@ jobs:
       matrix:
         os:
           - ubuntu-18.04
+          - macos-10.15
         tool:
           - cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog,cross,shellcheck,shfmt
-          - cargo-hack@0.5.10,cargo-llvm-cov@0.1.13,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@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@0.5.10,cargo-llvm-cov@0.1.13,cargo-minimal-versions@0.1.1,parse-changelog@0.4.6,cross@0.2.1,shellcheck@0.8.0,shfmt@3.4.2
           - os: windows-2019
             tool: cargo-hack,cargo-llvm-cov,cargo-minimal-versions,parse-changelog
           - os: windows-2019
-            tool: cargo-hack@0.5.10,cargo-llvm-cov@0.1.13,cargo-minimal-versions@0.1.1,parse-changelog@0.4.6,cross@0.2.1
+            tool: 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
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v2
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d1f955e5..dc838b6c 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]
 
+- Update `cargo-llvm-cov@latest` to 0.1.15.
+
 ## [1.0.2] - 2022-01-05
 
 - Update `cargo-minimal-versions@latest` to 0.1.1.
diff --git a/README.md b/README.md
index 4467d7d9..d9fd115d 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ To install a specific version, use `@version` syntax:
 ```yaml
 - uses: taiki-e/install-action@v1
   with:
-    tool: cargo-hack@0.5.9
+    tool: cargo-hack@0.5.10
 ```
 
 To install multiple tools:
diff --git a/main.sh b/main.sh
index 104013e9..00b43207 100755
--- a/main.sh
+++ b/main.sh
@@ -28,7 +28,7 @@ warn() {
     echo "::warning::$*"
 }
 info() {
-    echo >&2 "info: $*"
+    echo "info: $*"
 }
 
 if [[ $# -gt 0 ]]; then
@@ -59,7 +59,7 @@ for tool in "${tools[@]}"; do
                 # https://github.com/taiki-e/cargo-hack/releases
                 cargo-hack) latest_version="0.5.10" ;;
                 # https://github.com/taiki-e/cargo-llvm-cov/releases
-                cargo-llvm-cov) latest_version="0.1.13" ;;
+                cargo-llvm-cov) latest_version="0.1.15" ;;
                 # https://github.com/taiki-e/cargo-minimal-versions/releases
                 cargo-minimal-versions) latest_version="0.1.1" ;;
                 # https://github.com/taiki-e/parse-changelog/releases
@@ -144,5 +144,5 @@ for tool in "${tools[@]}"; do
         cargo-*) x cargo "${tool#cargo-}" --version ;;
         *) x "${tool}" --version ;;
     esac
-    echo >&2
+    echo
 done