diff --git a/.golangci.yml b/.golangci.yml
new file mode 100644
index 0000000000000000000000000000000000000000..981200e8a89d8f297abb8a5d2390ffcf0f36fb15
--- /dev/null
+++ b/.golangci.yml
@@ -0,0 +1,83 @@
+run:
+  deadline: 5m
+  tests: true
+  modules-download-mode: readonly
+output:
+  format: colored-line-number
+  print-issued-lines: true
+  print-linter-name: true
+linters-settings:
+  depguard:
+    list-type: blacklist
+    include-go-root: true
+    packages:
+      - log
+      - github.com/satori/go.uuid
+  errcheck:
+    check-type-assertions: true
+    check-blank: true
+  goconst:
+    min-len: 3
+    min-occurrences: 3
+  gocritic:
+    enabled-tags:
+      - diagnostic
+      - performance
+      - style
+      - opinionated
+      - experimental
+    disabled-checks:
+      - sloppyReassign
+  gofmt:
+    simplify: true
+  golint:
+    min-confidence: 0.8
+  govet:
+    check-shadowing: true
+  maligned:
+    suggest-new: true
+  misspell:
+    locale: US
+  prealloc:
+    simple: true
+    range-loops: true
+    for-loops: false
+  unused:
+    check-exported: false
+linters:
+  disable-all: true
+  enable:
+    - deadcode
+    - depguard
+    - errcheck
+    - goconst
+    - gocritic
+    - gofmt
+    - goimports
+    - golint
+    - gosec
+    - gosimple
+    - govet
+    - ineffassign
+    - interfacer
+    - maligned
+    - misspell
+    - prealloc
+    - scopelint
+    - staticcheck
+    - structcheck
+    - unconvert
+    - unused
+    - varcheck
+issues:
+  max-per-linter: 20
+  max-same-issues: 3
+  new: false
+  exclude-use-default: false
+  exclude:
+    - should call os.Exit to set exit code
+    - "G301: Expect directory permissions to be 0750 or less"
+    - "G302: Expect file permissions to be 0600 or less"
+    - "G304: Potential file inclusion via variable"
+    - "G104: Errors unhandled"
+    - "G204: Subprocess launched with variable"
diff --git a/cef/DeleteCookiesCallback_gen.go b/cef/DeleteCookiesCallback_gen.go
index 1b079ff49a8d7da54d47cf942b9556fe0c7324a5..930386c900cdd3b9c161520cdb5abce96f40896e 100644
--- a/cef/DeleteCookiesCallback_gen.go
+++ b/cef/DeleteCookiesCallback_gen.go
@@ -55,7 +55,7 @@ func (d *DeleteCookiesCallback) Base() *BaseRefCounted {
 
 // OnComplete (on_complete)
 // Method that will be called upon completion. |num_deleted| will be the
-// number of cookies that were deleted or -1 if unknown.
+// number of cookies that were deleted.
 func (d *DeleteCookiesCallback) OnComplete(num_deleted int32) {
 	lookupDeleteCookiesCallbackProxy(d.Base()).OnComplete(d, num_deleted)
 }
diff --git a/cef/MainArgs.go b/cef/MainArgs.go
index 8cc88b5aaf3b9381531132342c56f5652da5d056..e6d80ad57c4969c5a3fa359192162be458134f8f 100644
--- a/cef/MainArgs.go
+++ b/cef/MainArgs.go
@@ -30,7 +30,3 @@ func (d *MainArgs) toNative(native *C.cef_main_args_t) *C.cef_main_args_t {
 	*native = d.native
 	return native
 }
-
-func (d *MainArgs) fromNative(native *C.cef_main_args_t) {
-	d.native = *native
-}
diff --git a/cef/RequestContext_gen.go b/cef/RequestContext_gen.go
index 9a06daa408edcf8325b982509854079a8f0a9772..bf1c6abd3cf47d66565028c912fb516fd669e993 100644
--- a/cef/RequestContext_gen.go
+++ b/cef/RequestContext_gen.go
@@ -21,7 +21,6 @@ import (
 	// void gocef_request_context_clear_certificate_exceptions(cef_request_context_t * self, cef_completion_callback_t * callback, void (CEF_CALLBACK *callback__)(cef_request_context_t *, cef_completion_callback_t *)) { return callback__(self, callback); }
 	// void gocef_request_context_close_all_connections(cef_request_context_t * self, cef_completion_callback_t * callback, void (CEF_CALLBACK *callback__)(cef_request_context_t *, cef_completion_callback_t *)) { return callback__(self, callback); }
 	// void gocef_request_context_resolve_host(cef_request_context_t * self, cef_string_t * origin, cef_resolve_callback_t * callback, void (CEF_CALLBACK *callback__)(cef_request_context_t *, cef_string_t *, cef_resolve_callback_t *)) { return callback__(self, origin, callback); }
-	// cef_errorcode_t gocef_request_context_resolve_host_cached(cef_request_context_t * self, cef_string_t * origin, cef_string_list_t resolved_ips, cef_errorcode_t (CEF_CALLBACK *callback__)(cef_request_context_t *, cef_string_t *, cef_string_list_t)) { return callback__(self, origin, resolved_ips); }
 	// void gocef_request_context_load_extension(cef_request_context_t * self, cef_string_t * root_directory, cef_dictionary_value_t * manifest, cef_extension_handler_t * handler, void (CEF_CALLBACK *callback__)(cef_request_context_t *, cef_string_t *, cef_dictionary_value_t *, cef_extension_handler_t *)) { return callback__(self, root_directory, manifest, handler); }
 	// int gocef_request_context_did_load_extension(cef_request_context_t * self, cef_string_t * extension_id, int (CEF_CALLBACK *callback__)(cef_request_context_t *, cef_string_t *)) { return callback__(self, extension_id); }
 	// int gocef_request_context_has_extension(cef_request_context_t * self, cef_string_t * extension_id, int (CEF_CALLBACK *callback__)(cef_request_context_t *, cef_string_t *)) { return callback__(self, extension_id); }
@@ -252,20 +251,6 @@ func (d *RequestContext) ResolveHost(origin string, callback *ResolveCallback) {
 	C.gocef_request_context_resolve_host(d.toNative(), (*C.cef_string_t)(origin_), callback.toNative(), d.resolve_host)
 }
 
-// ResolveHostCached (resolve_host_cached)
-// Attempts to resolve |origin| to a list of associated IP addresses using
-// cached data. |resolved_ips| will be populated with the list of resolved IP
-// addresses or NULL if no cached data is available. Returns ERR_NONE on
-// success. This function must be called on the browser process IO thread.
-func (d *RequestContext) ResolveHostCached(origin string, resolved_ips StringList) Errorcode {
-	origin_ := C.cef_string_userfree_alloc()
-	setCEFStr(origin, origin_)
-	defer func() {
-		C.cef_string_userfree_free(origin_)
-	}()
-	return Errorcode(C.gocef_request_context_resolve_host_cached(d.toNative(), (*C.cef_string_t)(origin_), C.cef_string_list_t(resolved_ips), d.resolve_host_cached))
-}
-
 // LoadExtension (load_extension)
 // Load an extension.
 //
diff --git a/cef/string.go b/cef/string.go
index ee3c1384ef4fc903dac20e1ce5cfd754274f0dbf..38cb3dcb2085a5e063ca4885f77a4e8a3a95d3a9 100644
--- a/cef/string.go
+++ b/cef/string.go
@@ -8,14 +8,6 @@ import (
 	"unsafe"
 )
 
-func newCEFStr(str string) *C.cef_string_t {
-	utf8str := C.CString(str)
-	cefstr := (*C.cef_string_t)(C.calloc(1, C.size_t(unsafe.Sizeof(C.cef_string_t{}))))
-	C.cef_string_from_utf8(utf8str, C.strlen(utf8str), cefstr)
-	C.free(unsafe.Pointer(utf8str))
-	return cefstr
-}
-
 func setCEFStr(str string, cefStr *C.cef_string_t) {
 	utf8str := C.CString(str)
 	C.cef_string_from_utf8(utf8str, C.strlen(utf8str), cefStr)
diff --git a/go.mod b/go.mod
index 08ede1d01a89b03670acadf8ce91641ccaf7472b..f774ad5eca060323a4bbc01047f3cbe947df0f83 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module github.com/richardwilkes/cef
 
-require github.com/richardwilkes/toolbox v1.5.0
+require github.com/richardwilkes/toolbox v1.6.1
diff --git a/go.sum b/go.sum
index 432a44fe6a2ed65470eb4323faef73d492600b9b..a22342dc0fa96634deaf00d8d1cf77aa88c75a16 100644
--- a/go.sum
+++ b/go.sum
@@ -6,13 +6,13 @@ github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942 h1:A7GG7zcGjl3jqAqGPmcNjd
 github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942/go.mod h1:eCbImbZ95eXtAUIbLAuAVnBnwf83mjf6QIVH8SHYwqQ=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/richardwilkes/toolbox v1.5.0 h1:8HkK68pUD20ZYiSFUWing23bSPkJHuMTkR8TdUzoobA=
-github.com/richardwilkes/toolbox v1.5.0/go.mod h1:BhrbXd529SOF8vK4ve7ABji9fvItLH7+5sVpnqVQCvs=
+github.com/richardwilkes/toolbox v1.6.1 h1:mC97qYjledp68mpg9yiM25SXYJIjKuvt0s3s0pitmrY=
+github.com/richardwilkes/toolbox v1.6.1/go.mod h1:/3ynfaWs6sEF5hZEN3ANCDLOvFwaWmHi1AnlmHmaAqM=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-golang.org/x/sys v0.0.0-20190322080309-f49334f85ddc h1:4gbWbmmPFp4ySWICouJl6emP0MyS31yy9SrTlAGFT+g=
-golang.org/x/sys v0.0.0-20190322080309-f49334f85ddc/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190520201301-c432e742b0af h1:NXfmMfXz6JqGfG3ikSxcz2N93j6DgScr19Oo2uwFu88=
+golang.org/x/sys v0.0.0-20190520201301-c432e742b0af/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
diff --git a/internal/cefgen/field.go b/internal/cefgen/field.go
index ae5902c6533e544085267e408c310327f442c3b7..20a83b519df1416cb8921d0e19c018d2933992df 100644
--- a/internal/cefgen/field.go
+++ b/internal/cefgen/field.go
@@ -62,7 +62,7 @@ type param struct {
 func (f *field) processedCParams(in []string) []param {
 	params := make([]param, len(in))
 	for i, p := range in {
-		p = strings.Replace(p, "const ", "", -1)
+		p = strings.ReplaceAll(p, "const ", "")
 		if space := strings.Index(p, " "); space != -1 {
 			params[i] = param{
 				Type: p[:space],
diff --git a/internal/cefgen/main.go b/internal/cefgen/main.go
index d034d64beb6f52a6eb2049c9fdf8d7fdc000616c..b0ccea36d0f822e24c67fc8c689a3032ffac6e57 100644
--- a/internal/cefgen/main.go
+++ b/internal/cefgen/main.go
@@ -65,7 +65,7 @@ func cleanOutput() {
 
 func examineCEFSource(headers []string) {
 	var err error
-	cmd := exec.Command("clang", clangArgs(headers)...)
+	cmd := exec.Command("clang", clangArgs(headers)...) //nolint:gosec
 	cmd.Dir, err = filepath.Abs(cefBaseDir)
 	jot.FatalIfErr(err)
 	stdout, err := cmd.StdoutPipe()
diff --git a/internal/cefgen/variable.go b/internal/cefgen/variable.go
index af73f38740a248ff74e1dd7363035a0d2fe9a7e8..08d229dd6b68ec2de880d145d52a33b465224c29 100644
--- a/internal/cefgen/variable.go
+++ b/internal/cefgen/variable.go
@@ -74,11 +74,11 @@ func newCVar(name, typeInfo string, pos position) *variable {
 	}
 
 	if v.HadConst = strings.Contains(typeInfo, "const "); v.HadConst {
-		typeInfo = strings.Replace(typeInfo, "const ", "", -1)
+		typeInfo = strings.ReplaceAll(typeInfo, "const ", "")
 	}
 	typeInfo = strings.TrimSpace(typeInfo)
 	typeInfo = strings.TrimPrefix(typeInfo, "struct _")
-	typeInfo = strings.Replace(typeInfo, "long long", "longlong", -1)
+	typeInfo = strings.ReplaceAll(typeInfo, "long long", "longlong")
 	if v.Name == baseFieldName {
 		typeInfo += " *"
 	}
diff --git a/main.go b/main.go
index c5ed7d1fe5f4c2aa34458e2c8a60f6c4be4bac91..013e89f57c6cf082da7e6bab1edf745a7f9fa2e4 100644
--- a/main.go
+++ b/main.go
@@ -9,7 +9,7 @@ import (
 	"github.com/richardwilkes/toolbox/cmdline"
 )
 
-const desiredCEFVersion = "73.1.12+gee4b49f+chromium-73.0.3683.75"
+const desiredCEFVersion = "74.1.19+gb62bacf+chromium-74.0.3729.157"
 
 func main() {
 	cmdline.CopyrightYears = "2018-2019"