diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a079bb4..377d42c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,21 +6,21 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ '1.14', '1.13' ]
+        go: [ '1.20', '1.19' ]
     name: Go ${{ matrix.go }} test
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Setup Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
           go-version: ${{ matrix.go }}
       - name: Install GolangCI-Lint
-        run: curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.27.0
+        run: curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.51.2
       - run: make test_coverage
       - name: Upload code coverage to codecov
-        if: matrix.go == '1.14'
-        uses: codecov/codecov-action@v1
+        if: matrix.go == '1.20'
+        uses: codecov/codecov-action@v3
         with:
           file: ./coverage.out
       - run: make lint
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 58c6ed0..bd9e3c2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,11 +14,11 @@ jobs:
       - name: Unshallow
         run: git fetch --prune --unshallow
       - name: Set up Go
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v3
         with:
           go-version: 1.x
       - name: Run GoReleaser
-        uses: goreleaser/goreleaser-action@v1
+        uses: goreleaser/goreleaser-action@v4
         with:
           version: latest
           args: release --rm-dist
diff --git a/.golangci.yml b/.golangci.yml
index 1580acd..55ebeeb 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -1,20 +1,14 @@
 run:
-
-linters-settings:
-  govet:
+  linters-settings:
+    govet:
+       enable-all: true
+  linters:
     enable-all: true
-
-linters:
-  enable-all: true
-  disable:
-    - gochecknoglobals
-    - gomnd
-    - gocognit
-    - nestif
-
-issues:
-  exclude-rules:
-    - path: reqwithoutctx/ssa.go
-      text: "Consider preallocating `exts`"
-      linters:
-        - prealloc
+    disable:
+      - gochecknoglobals
+      - gomnd
+      - gocognit
+      - nestif
+      - nilnil
+      - paralleltest
+      - varnamelen
\ No newline at end of file
diff --git a/go.mod b/go.mod
index 7df59cb..7a71f3b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,8 +1,14 @@
 module github.com/sonatard/noctx
 
-go 1.16
+go 1.20
 
 require (
 	github.com/gostaticanalysis/analysisutil v0.7.1
-	golang.org/x/tools v0.1.4
+	golang.org/x/tools v0.7.0
+)
+
+require (
+	github.com/gostaticanalysis/comment v1.4.2 // indirect
+	golang.org/x/mod v0.9.0 // indirect
+	golang.org/x/sys v0.6.0 // indirect
 )
diff --git a/go.sum b/go.sum
index 6150589..e85de61 100644
--- a/go.sum
+++ b/go.sum
@@ -20,29 +20,24 @@ github.com/tenntenn/modver v1.0.1/go.mod h1:bePIyQPb7UeioSRkw3Q0XeMhYZSMx9B8ePqg
 github.com/tenntenn/text/transform v0.0.0-20200319021203-7eef512accb3 h1:f+jULpRQGxTSkNYKJ51yaw6ChIqO+Je8UqsTKN/cDag=
 github.com/tenntenn/text/transform v0.0.0-20200319021203-7eef512accb3/go.mod h1:ON8b8w4BN/kE1EOhwT0o+d62W65a6aPw1nouo9LMgyY=
 github.com/yuin/goldmark v1.2.1/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
-github.com/yuin/goldmark v1.3.5/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/mod v0.4.1/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.4.2 h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
-golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
+golang.org/x/mod v0.9.0 h1:KENHtAZL2y3NLMYZeHY9DW8HW8V+kQyJsY/V9JlKvCs=
+golang.org/x/mod v0.9.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 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 v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
-golang.org/x/net v0.0.0-20210405180319-a5a99cb37ef4/go.mod h1:p54w0d4576C0XHj96bSt6lcn1PtDYWL6XObtHCRCNQM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20201020160332-67f06af15bc9/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0 h1:wsuoTGHzEhffawBOhz5CYhcrV4IdKZbEyZjBMuTp12o=
 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 v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210330210617-4fbd30eecc44/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210510120138-977fb7262007 h1:gG67DSER+11cZvqIMb8S8bt0vZtiN6xWYARwirrOSfE=
-golang.org/x/sys v0.0.0-20210510120138-977fb7262007/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/sys v0.6.0 h1:MVltZSvRTcU2ljQOhs94SXPftV6DCNnZViHeQps87pQ=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3 h1:cokOdA+Jmi5PJGXLlLllQSgYigAEfHXJAERHVMaCc2k=
@@ -51,10 +46,9 @@ golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGm
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.1.1-0.20210205202024-ef80cdb6ec6d/go.mod h1:9bzcO0MWcOuT0tm1iBGzDVPshzfwoVvREIui8C+MHqU=
 golang.org/x/tools v0.1.1-0.20210302220138-2ac05c832e1a/go.mod h1:9bzcO0MWcOuT0tm1iBGzDVPshzfwoVvREIui8C+MHqU=
-golang.org/x/tools v0.1.4 h1:cVngSRcfgyZCzys3KYOpCFa+4dqX/Oub9tAq00ttGVs=
-golang.org/x/tools v0.1.4/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
+golang.org/x/tools v0.7.0 h1:W4OVu8VVOaIO0yzWMNdepAulS7YfoS3Zabrm8DOXXU4=
+golang.org/x/tools v0.7.0/go.mod h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
 golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/ngfunc/main.go b/ngfunc/main.go
index cfeb0f0..4630621 100644
--- a/ngfunc/main.go
+++ b/ngfunc/main.go
@@ -1,6 +1,7 @@
 package ngfunc
 
 import (
+	"fmt"
 	"go/types"
 
 	"github.com/gostaticanalysis/analysisutil"
@@ -34,8 +35,11 @@ func Run(pass *analysis.Pass) (interface{}, error) {
 func ngCalledFuncs(pass *analysis.Pass, ngFuncs []*types.Func) []*Report {
 	var reports []*Report
 
-	srcFuncs := pass.ResultOf[buildssa.Analyzer].(*buildssa.SSA).SrcFuncs
-	for _, sf := range srcFuncs {
+	ssa, ok := pass.ResultOf[buildssa.Analyzer].(*buildssa.SSA)
+	if !ok {
+		panic(fmt.Sprintf("%T is not *buildssa.SSA", pass.ResultOf[buildssa.Analyzer]))
+	}
+	for _, sf := range ssa.SrcFuncs {
 		for _, b := range sf.Blocks {
 			for _, instr := range b.Instrs {
 				for _, ngFunc := range ngFuncs {
diff --git a/noctx.go b/noctx.go
index 478ad88..89e0446 100644
--- a/noctx.go
+++ b/noctx.go
@@ -1,6 +1,7 @@
 package noctx
 
 import (
+	"fmt"
 	"github.com/sonatard/noctx/ngfunc"
 	"github.com/sonatard/noctx/reqwithoutctx"
 	"golang.org/x/tools/go/analysis"
@@ -8,23 +9,26 @@ import (
 )
 
 var Analyzer = &analysis.Analyzer{
-	Name: "noctx",
-	Doc:  Doc,
-	Run:  run,
+	Name:             "noctx",
+	Doc:              Doc,
+	Run:              run,
+	RunDespiteErrors: false,
 	Requires: []*analysis.Analyzer{
 		buildssa.Analyzer,
 	},
+	ResultType: nil,
+	FactTypes:  nil,
 }
 
 const Doc = "noctx finds sending http request without context.Context"
 
 func run(pass *analysis.Pass) (interface{}, error) {
 	if _, err := ngfunc.Run(pass); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("run: %w", err)
 	}
 
 	if _, err := reqwithoutctx.Run(pass); err != nil {
-		return nil, err
+		return nil, fmt.Errorf("run: %w", err)
 	}
 
 	return nil, nil
diff --git a/reqwithoutctx/ssa.go b/reqwithoutctx/ssa.go
index 3575126..d7e0f50 100644
--- a/reqwithoutctx/ssa.go
+++ b/reqwithoutctx/ssa.go
@@ -1,6 +1,7 @@
 package reqwithoutctx
 
 import (
+	"fmt"
 	"go/types"
 
 	"github.com/gostaticanalysis/analysisutil"
@@ -10,6 +11,7 @@ import (
 	"golang.org/x/tools/go/ssa"
 )
 
+//nolint:govet
 type Analyzer struct {
 	Funcs          []*ssa.Function
 	newRequestType types.Type
@@ -20,10 +22,13 @@ func NewAnalyzer(pass *analysis.Pass) *Analyzer {
 	newRequestType := analysisutil.TypeOf(pass, "net/http", "NewRequest")
 	requestType := analysisutil.TypeOf(pass, "net/http", "*Request")
 
-	srcFuncs := pass.ResultOf[buildssa.Analyzer].(*buildssa.SSA).SrcFuncs
+	ssa, ok := pass.ResultOf[buildssa.Analyzer].(*buildssa.SSA)
+	if !ok {
+		panic(fmt.Sprintf("%T is not *buildssa.SSA", pass.ResultOf[buildssa.Analyzer]))
+	}
 
 	return &Analyzer{
-		Funcs:          srcFuncs,
+		Funcs:          ssa.SrcFuncs,
 		newRequestType: newRequestType,
 		requestType:    requestType,
 	}
@@ -88,14 +93,14 @@ func (a *Analyzer) usedReqs() map[string]*ssa.Extract {
 }
 
 func (a *Analyzer) usedReqByCall(call *ssa.Call) []*ssa.Extract {
-	var exts []*ssa.Extract
+	args := call.Common().Args
+	exts := make([]*ssa.Extract, 0, len(args))
 
 	// skip net/http.Request method call
 	if call.Common().Signature().Recv() != nil && types.Identical(call.Value().Type(), a.requestType) {
 		return exts
 	}
 
-	args := call.Common().Args
 	if len(args) == 0 {
 		return exts
 	}