diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7089a82..cc2878f 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,17 +1,24 @@
 name: CI
 
-on: [push, pull_request]
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+permissions:
+  contents: read
 
 jobs:
   test:
     name: Test
     runs-on: ubuntu-latest
     steps:
-    - name: Checkout code
-      uses: actions/checkout@master
-    - name: Setup Go
-      uses: actions/setup-go@v1
-      with:
-        go-version: 1.x
-    - name: Test
-      run: make test
+      - name: Checkout code
+        uses: actions/checkout@v4
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 1.x
+      - name: Test
+        run: make test
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yaml
similarity index 52%
rename from .github/workflows/release.yml
rename to .github/workflows/release.yaml
index 892e322..47cf0b2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yaml
@@ -1,22 +1,28 @@
-name: release
+name: Release
+
 on:
   push:
     tags:
-    - "v[0-9]+.[0-9]+.[0-9]+"
+      - "v[0-9]+.[0-9]+.[0-9]+"
+
+permissions:
+  contents: write
+
 jobs:
-  goreleaser:
+  release:
+    name: Release
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v1
+        uses: actions/checkout@v4
         with:
-          fetch-depth: 1
+          fetch-depth: 0
       - name: Setup Go
-        uses: actions/setup-go@v1
+        uses: actions/setup-go@v5
         with:
-          go-version: 1.20
+          go-version: 1.x
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v1
+        uses: goreleaser/goreleaser-action@v5
         with:
           version: latest
           args: release --rm-dist
diff --git a/README.md b/README.md
index c041298..37b460b 100644
--- a/README.md
+++ b/README.md
@@ -63,10 +63,10 @@ $ u2s3 upload-file \
 
 ## Install
 
-To install, use `go get`:
+To install, use `go install`:
 
 ```bash
-$ go get github.com/hatena/u2s3
+go install github.com/hatena/u2s3@latest
 ```
 
 ## Contribution
diff --git a/cli/upload.go b/cli/upload.go
index 675ae51..860573e 100644
--- a/cli/upload.go
+++ b/cli/upload.go
@@ -63,10 +63,7 @@ func uploadCmdBase(cfg *config.UploadConfig, newAggFunc func(cfg *config.UploadC
 	if err := agg.Run(); err != nil {
 		return err
 	}
-	if err := upload(cfg, agg.GetUploadableFiles()); err != nil {
-		return err
-	}
-	return nil
+	return upload(cfg, agg.GetUploadableFiles())
 }
 
 func initResourceLimit(cfg *config.UploadConfig) {
diff --git a/go.mod b/go.mod
index 719da5f..151e134 100644
--- a/go.mod
+++ b/go.mod
@@ -1,34 +1,30 @@
 module github.com/hatena/u2s3
 
-go 1.20
+go 1.22
 
 require (
-	github.com/aws/aws-sdk-go v1.34.0
-	github.com/k0kubun/pp v2.3.0+incompatible
-	github.com/klauspost/pgzip v1.0.1
-	github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417
-	github.com/urfave/cli v1.22.1
+	github.com/aws/aws-sdk-go v1.51.30
+	github.com/k0kubun/pp v2.4.0+incompatible
+	github.com/klauspost/pgzip v1.2.6
+	github.com/opencontainers/runtime-spec v1.2.0
+	github.com/urfave/cli v1.22.14
 )
 
 require (
-	github.com/coreos/go-systemd/v22 v22.3.2 // indirect
-	github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d // indirect
-	github.com/docker/go-units v0.4.0 // indirect
+	github.com/coreos/go-systemd/v22 v22.5.0 // indirect
+	github.com/cpuguy83/go-md2man/v2 v2.0.4 // indirect
+	github.com/docker/go-units v0.5.0 // indirect
 	github.com/gogo/protobuf v1.3.2 // indirect
-	github.com/jmespath/go-jmespath v0.3.0 // indirect
-	github.com/russross/blackfriday/v2 v2.0.1 // indirect
-	github.com/shurcooL/sanitized_anchor_name v1.0.0 // indirect
-	golang.org/x/net v0.17.0 // indirect
+	github.com/jmespath/go-jmespath v0.4.0 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 )
 
 require (
 	github.com/containerd/cgroups v1.1.0
-	github.com/godbus/dbus/v5 v5.0.6 // indirect
+	github.com/godbus/dbus/v5 v5.1.0 // indirect
 	github.com/k0kubun/colorstring v0.0.0-20150214042306-9440f1994b88 // indirect
-	github.com/klauspost/compress v1.2.2-0.20170218081604-14c9a76e3c95 // indirect
-	github.com/klauspost/cpuid v0.0.0-20160302075316-09cded8978dc // indirect
-	github.com/klauspost/crc32 v0.0.0-20170210140523-1bab8b35b6bb // indirect
-	github.com/mattn/go-colorable v0.0.8-0.20170312235756-a392f450ea64 // indirect
-	github.com/mattn/go-isatty v0.0.0-20161123143637-30a891c33c7c // indirect
-	golang.org/x/sys v0.13.0 // indirect
+	github.com/klauspost/compress v1.17.8 // indirect
+	github.com/mattn/go-colorable v0.1.13 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	golang.org/x/sys v0.19.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 1094600..a88cb1a 100644
--- a/go.sum
+++ b/go.sum
@@ -1,56 +1,57 @@
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/aws/aws-sdk-go v1.34.0 h1:brux2dRrlwCF5JhTL7MUT3WUwo9zfDHZZp3+g3Mvlmo=
-github.com/aws/aws-sdk-go v1.34.0/go.mod h1:5zCpMtNQVjRREroY7sYe8lOMRSxkhG6MZveU8YkpAk0=
+github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/aws/aws-sdk-go v1.51.30 h1:RVFkjn9P0JMwnuZCVH0TlV5k9zepHzlbc4943eZMhGw=
+github.com/aws/aws-sdk-go v1.51.30/go.mod h1:LF8svs817+Nz+DmiMQKTO3ubZ/6IaTpq3TjupRn3Eqk=
 github.com/containerd/cgroups v1.1.0 h1:v8rEWFl6EoqHB+swVNjVoCJE8o3jX7e8nqBGPLaDFBM=
 github.com/containerd/cgroups v1.1.0/go.mod h1:6ppBcbh/NOOUU+dMKrykgaBnK9lCIBxHqJDGwsa1mIw=
-github.com/coreos/go-systemd/v22 v22.3.2 h1:D9/bQk5vlXQFZ6Kwuu6zaiXJ9oTPe68++AzAJc1DzSI=
-github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
+github.com/coreos/go-systemd/v22 v22.5.0 h1:RrqgGjYQKalulkV8NGVIfkXQf6YYmOyiJKk8iXXhfZs=
+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
+github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/cpuguy83/go-md2man/v2 v2.0.4 h1:wfIWP927BUkWJb2NmU/kNDYIBTh/ziUX91+lVfRxZq4=
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/docker/go-units v0.4.0 h1:3uh0PgVws3nIA0Q+MwDC8yjEPf9zjRfZZWXZYDct3Tw=
-github.com/docker/go-units v0.4.0/go.mod h1:fgPhTUdO+D/Jk86RDLlptpiXQzgHJF7gydDDbaIK4Dk=
-github.com/go-sql-driver/mysql v1.5.0/go.mod h1:DCzpHaOWr8IXmIStZouvnhqoel9Qv2LBy8hT2VhHyBg=
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+github.com/docker/go-units v0.5.0 h1:69rxXcBk27SvSaaxTtLh/8llcHD8vYHT7WSdRZ/jvr4=
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 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
-github.com/godbus/dbus/v5 v5.0.6 h1:mkgN1ofwASrYnJ5W6U/BxG15eXXXjirgZc7CLqkcaro=
-github.com/godbus/dbus/v5 v5.0.6/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
+github.com/godbus/dbus/v5 v5.1.0 h1:4KLkAxT3aOY8Li4FRJe/KvhoNFFxo0m6fNuFUO8QJUk=
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 github.com/gogo/protobuf v1.3.2 h1:Ov1cvc58UF3b5XjBnZv7+opcTcQFZebYjWzi34vdm4Q=
 github.com/gogo/protobuf v1.3.2/go.mod h1:P1XiOD3dCwIKUDQYPy72D8LYyHL2YPYrpS2s69NZV8Q=
-github.com/jmespath/go-jmespath v0.3.0 h1:OS12ieG61fsCg5+qLJ+SsW9NicxNkg3b25OyT2yCeUc=
-github.com/jmespath/go-jmespath v0.3.0/go.mod h1:9QtRXoHjLGCJ5IBSaohpXITPlowMeeYCZ7fLUTSywik=
+github.com/jmespath/go-jmespath v0.4.0 h1:BEgLn5cpjn8UN1mAw4NjwDrS35OdebyEtFe+9YPoQUg=
+github.com/jmespath/go-jmespath v0.4.0/go.mod h1:T8mJZnbsbmF+m6zOOFylbeCJqk5+pHWvzYPziyZiYoo=
+github.com/jmespath/go-jmespath/internal/testify v1.5.1 h1:shLQSRRSCCPj3f2gpwzGwWFoC7ycTf1rcQZHOlsJ6N8=
+github.com/jmespath/go-jmespath/internal/testify v1.5.1/go.mod h1:L3OGu8Wl2/fWfCI6z80xFu9LTZmf1ZRjMHUOPmWr69U=
 github.com/k0kubun/colorstring v0.0.0-20150214042306-9440f1994b88 h1:uC1QfSlInpQF+M0ao65imhwqKnz3Q2z/d8PWZRMQvDM=
 github.com/k0kubun/colorstring v0.0.0-20150214042306-9440f1994b88/go.mod h1:3w7q1U84EfirKl04SVQ/s7nPm1ZPhiXd34z40TNz36k=
-github.com/k0kubun/pp v2.3.0+incompatible h1:EKhKbi34VQDWJtq+zpsKSEhkHHs9w2P8Izbq8IhLVSo=
-github.com/k0kubun/pp v2.3.0+incompatible/go.mod h1:GWse8YhT0p8pT4ir3ZgBbfZild3tgzSScAn6HmfYukg=
+github.com/k0kubun/pp v2.4.0+incompatible h1:M9iQzcejGfiBjDa7+Tc0rJgR7WFKP6rim/Q0DDrAT3g=
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 github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
 github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
-github.com/klauspost/compress v1.2.2-0.20170218081604-14c9a76e3c95 h1:KyUnXc44yTtn8UlNpbfKOrsoLAf068TCcsZO9zKbsT8=
-github.com/klauspost/compress v1.2.2-0.20170218081604-14c9a76e3c95/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
-github.com/klauspost/cpuid v0.0.0-20160302075316-09cded8978dc h1:WW8B7p7QBnFlqRVv/k6ro/S8Z7tCnYjJHcQNScx9YVs=
-github.com/klauspost/cpuid v0.0.0-20160302075316-09cded8978dc/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
-github.com/klauspost/crc32 v0.0.0-20170210140523-1bab8b35b6bb h1:D97hrOh+2BS8oOn9p9/NInyRpl6mOggjOJgrwBu6enA=
-github.com/klauspost/crc32 v0.0.0-20170210140523-1bab8b35b6bb/go.mod h1:+ZoRqAPRLkC4NPOvfYeR5KNOrY6TD+/sAC3HXPZgDYg=
-github.com/klauspost/pgzip v1.0.1 h1:J1UvIV7CrOZlEMyfAfnqIzTmoPHEX0ODZsLATb71mkk=
-github.com/klauspost/pgzip v1.0.1/go.mod h1:Ch1tH69qFZu15pkjo5kYi6mth2Zzwzt50oCQKQE9RUs=
-github.com/mattn/go-colorable v0.0.8-0.20170312235756-a392f450ea64 h1:O6Oau7iK7xf3PbaNDX8WIhxH5vzmXXhWOe0MP/i0edQ=
-github.com/mattn/go-colorable v0.0.8-0.20170312235756-a392f450ea64/go.mod h1:9vuHe8Xs5qXnSaW/c/ABM9alt+Vo+STaOChaDxuIBZU=
-github.com/mattn/go-isatty v0.0.0-20161123143637-30a891c33c7c h1:YHHK/dEmr2Jo1cWD1VMB2waEeHJhHFp3CEylwWy/VcY=
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-github.com/opencontainers/runtime-spec v1.0.3-0.20210326190908-1c3f411f0417 h1:3snG66yBm59tKhhSPQrQ/0bCrv1LQbKt40LnUPiUxdc=
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+github.com/opencontainers/runtime-spec v1.2.0/go.mod h1:jwyrGlmzljRJv/Fgzds9SsS/C5hL+LL3ko9hs6T5lQ0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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-github.com/russross/blackfriday/v2 v2.0.1 h1:lPqVAte+HuHNfhJ/0LC98ESWRz8afy9tM/0RK8m9o+Q=
-github.com/russross/blackfriday/v2 v2.0.1/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/shurcooL/sanitized_anchor_name v1.0.0 h1:PdmoCO6wvbs+7yrJyMORt4/BmY5IYyJwS/kOiWx8mHo=
-github.com/shurcooL/sanitized_anchor_name v1.0.0/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
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-github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5cxcmMvtA=
-github.com/stretchr/testify v1.8.0 h1:pSgiaMZlXftHpm5L7V1+rVB+AZJydKsMxsQBIJw4PKk=
-github.com/urfave/cli v1.22.1 h1:+mkCCcOFKPnCmVYVcURKps1Xe+3zP90gSYGNfRkjoIY=
-github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
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+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
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+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
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 github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
@@ -60,7 +61,6 @@ golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
@@ -71,11 +71,14 @@ golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJ
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
-golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.19.0 h1:q5f1RH2jigJ1MoAWp2KTp3gm5zAGFUTarQZ5U386+4o=
+golang.org/x/sys v0.19.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200619180055-7c47624df98f/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
@@ -85,5 +88,9 @@ golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8T
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/pkg/aws/s3.go b/pkg/aws/s3.go
index ab255b9..4b10f3f 100644
--- a/pkg/aws/s3.go
+++ b/pkg/aws/s3.go
@@ -68,9 +68,5 @@ func (c *S3Cli) HasKey(key string) bool {
 		Bucket: aws.String(c.bucket),
 		Key:    aws.String(key),
 	})
-	if err != nil {
-		return false
-	}
-	return true
+	return err == nil
 }
-
diff --git a/pkg/core/epoch.go b/pkg/core/epoch.go
index ca5d9a7..2278770 100644
--- a/pkg/core/epoch.go
+++ b/pkg/core/epoch.go
@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"regexp"
 	"time"
@@ -116,7 +115,6 @@ func parseEpoch(l, logFormat string, step int) string {
 	r := ""
 	switch logFormat {
 	case "ssv":
-		break
 	case "tsv":
 		m := reTsv.FindStringSubmatch(l)
 		if len(m) == 2 {
@@ -127,7 +125,6 @@ func parseEpoch(l, logFormat string, step int) string {
 				r = r[1 : len(r)-1]
 			}
 		}
-		break
 	case "jsonl":
 		m := reJsonl.FindStringSubmatch(l)
 		if len(m) == 2 {
@@ -146,7 +143,7 @@ func parseEpoch(l, logFormat string, step int) string {
 }
 
 func NewEpoch(epochKey, keyFmt, output string) (*Epoch, error) {
-	fp, err := ioutil.TempFile("", "u2s3")
+	fp, err := os.CreateTemp("", "u2s3")
 	if err != nil {
 		return nil, err
 	}
diff --git a/pkg/core/file.go b/pkg/core/file.go
index 32ebe9a..37faf37 100644
--- a/pkg/core/file.go
+++ b/pkg/core/file.go
@@ -3,7 +3,6 @@ package core
 import (
 	"errors"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 
@@ -131,7 +130,7 @@ func (f *File) compress() error {
 		return err
 	}
 	f.inFp = inFp
-	outFp, err := ioutil.TempFile("", "u2s3")
+	outFp, err := os.CreateTemp("", "u2s3")
 	if err != nil {
 		return err
 	}
diff --git a/pkg/core/file_test.go b/pkg/core/file_test.go
index 3f66dbc..234fce3 100644
--- a/pkg/core/file_test.go
+++ b/pkg/core/file_test.go
@@ -1,7 +1,7 @@
 package core
 
 import (
-	"io/ioutil"
+	"io"
 	"os"
 	"reflect"
 	"testing"
@@ -11,7 +11,7 @@ import (
 
 func TestFileCompress(t *testing.T) {
 	contents := []byte("abc\ndef\nghi")
-	src, err := ioutil.TempFile("", "u2s3")
+	src, err := os.CreateTemp("", "u2s3")
 	if err != nil {
 		t.Fatalf("error: %s", err)
 	}
@@ -28,7 +28,7 @@ func TestFileCompress(t *testing.T) {
 	if err != nil {
 		t.Fatalf("error: %s", err)
 	}
-	got, err := ioutil.ReadAll(outRaw)
+	got, err := io.ReadAll(outRaw)
 	if err != nil {
 		t.Fatalf("error: %s", err)
 	}
diff --git a/pkg/core/worker.go b/pkg/core/worker.go
index 0d2861e..81254e0 100644
--- a/pkg/core/worker.go
+++ b/pkg/core/worker.go
@@ -16,7 +16,7 @@ func SelectUploadFiles(workerNum int, que fetchQueue) chan UploadableFile {
 	var wg sync.WaitGroup
 	out := make(chan UploadableFile)
 
-	for i := 0; i < workerNum; i++ {
+	for range workerNum {
 		wg.Add(1)
 		go fetch(&wg, que)
 	}
diff --git a/pkg/resourcelimit/tc.go b/pkg/resourcelimit/tc.go
index af439a7..6a39894 100644
--- a/pkg/resourcelimit/tc.go
+++ b/pkg/resourcelimit/tc.go
@@ -24,10 +24,7 @@ func createLimitBW(c *config.UploadConfig, minor int) error {
 		return err
 	}
 	args = strings.Split(fmt.Sprintf("filter add dev %s parent %d: protocol ip prio %d handle 1: cgroup", c.Device, MAJOR_ID, MAJOR_ID), " ")
-	if err := exec.Command("tc", args...).Run(); err != nil {
-		return err
-	}
-	return nil
+	return exec.Command("tc", args...).Run()
 }
 
 func deleteLimitBW(c *config.UploadConfig) {
diff --git a/pkg/util/util.go b/pkg/util/util.go
index b228e3c..a71d282 100644
--- a/pkg/util/util.go
+++ b/pkg/util/util.go
@@ -49,7 +49,7 @@ func GenerateUploadKey(keyTemp *config.UploadKeyTemplate, keyFmt string) (string
 	temp := template.New("key")
 	template.Must(temp.Parse(keyFmt))
 	var res bytes.Buffer
-	err = temp.Execute(&res, map[string]interface{}{
+	err = temp.Execute(&res, map[string]any{
 		"Output":   keyTemp.Output,
 		"Year":     keyTemp.Year,
 		"Month":    keyTemp.Month,
diff --git a/pkg/util/util_test.go b/pkg/util/util_test.go
index 440ff19..08a8832 100644
--- a/pkg/util/util_test.go
+++ b/pkg/util/util_test.go
@@ -4,7 +4,6 @@ import (
 	"bufio"
 	"compress/gzip"
 	"io"
-	"io/ioutil"
 	"os"
 	"reflect"
 	"testing"
@@ -21,7 +20,7 @@ func TestIsGzipped(t *testing.T) {
 
 	var w io.Writer
 	for _, c := range cases {
-		fp, err := ioutil.TempFile("", "u2s3-test")
+		fp, err := os.CreateTemp("", "u2s3-test")
 		if err != nil {
 			break
 		}