diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index e1aaa4ab..5a35a946 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       GO_VERSION: 1.19
-      GOLANGCI_LINT_VERSION: v1.48.0
+      GOLANGCI_LINT_VERSION: v1.49.0
       HUGO_VERSION: 0.54.0
       CGO_ENABLED: 0
       LEGO_E2E_TESTS: CI
diff --git a/.golangci.toml b/.golangci.toml
index 82d1883e..ebd6838d 100644
--- a/.golangci.toml
+++ b/.golangci.toml
@@ -1,5 +1,5 @@
 [run]
-  deadline = "5m"
+  timeout = "5m"
   skip-files = []
 
 [linters-settings]
@@ -53,13 +53,16 @@
 [linters]
   enable-all = true
   disable = [
+    "deadcode", # deprecated
+    "exhaustivestruct", # deprecated
+    "golint", # deprecated
+    "ifshort", # deprecated
     "interfacer", # deprecated
     "maligned", # deprecated
-    "scopelint", # deprecated
-    "golint", # deprecated
     "nosnakecase", # deprecated
-    "ifshort", # deprecated
-    "exhaustivestruct", # deprecated
+    "scopelint", # deprecated
+    "structcheck", # deprecated
+    "varcheck", # deprecated
     "cyclop", # duplicate of gocyclo
     "sqlclosecheck", # not relevant (SQL)
     "rowserrcheck", # not relevant (SQL)
@@ -102,7 +105,8 @@
   exclude = [
     "Error return value of .((os\\.)?std(out|err)\\..*|.*Close|.*Flush|os\\.Remove(All)?|.*printf?|os\\.(Un)?Setenv). is not checked",
     "exported (type|method|function) (.+) should have comment or be unexported",
-    "ST1000: at least one file in a package should have a package comment"
+    "ST1000: at least one file in a package should have a package comment",
+    "package-comments: should have a package comment",
   ]
   [[issues.exclude-rules]]
     path = "(.+)_test.go"
@@ -197,12 +201,3 @@
   [[issues.exclude-rules]]
     path = "providers/dns/sakuracloud/client.go"
     text = "mu is a global variable"
-  [[issues.exclude-rules]]
-    path = "providers/dns/tencentcloud/client.go"
-    text = "RESOURCENOTFOUND_NODATAOFRECORD contains underscore."
-  [[issues.exclude-rules]]
-    path = "providers/dns/ibmcloud/internal/wrapper.go"
-    text = "Dns_Domain(_ResourceRecord)? contains underscore."
-  [[issues.exclude-rules]]
-    path = "providers/dns/rfc2136/"
-    text = "RR_Header contains underscore."
diff --git a/providers/dns/clouddns/internal/client.go b/providers/dns/clouddns/internal/client.go
index b4d1154f..7ea6234c 100644
--- a/providers/dns/clouddns/internal/client.go
+++ b/providers/dns/clouddns/internal/client.go
@@ -230,7 +230,7 @@ func (c *Client) doRequest(req *http.Request) ([]byte, error) {
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return nil, readError(req, resp)
 	}
 
diff --git a/providers/dns/cloudns/internal/client.go b/providers/dns/cloudns/internal/client.go
index e9f89217..d5b6a60e 100644
--- a/providers/dns/cloudns/internal/client.go
+++ b/providers/dns/cloudns/internal/client.go
@@ -283,7 +283,7 @@ func (c *Client) doRequest(method string, uri *url.URL) (json.RawMessage, error)
 		return nil, errors.New(toUnreadableBodyMessage(req, content))
 	}
 
-	if resp.StatusCode != 200 {
+	if resp.StatusCode != http.StatusOK {
 		return nil, fmt.Errorf("invalid code (%d), error: %s", resp.StatusCode, content)
 	}
 
diff --git a/providers/dns/digitalocean/client.go b/providers/dns/digitalocean/client.go
index d89eb598..82580e78 100644
--- a/providers/dns/digitalocean/client.go
+++ b/providers/dns/digitalocean/client.go
@@ -49,7 +49,7 @@ func (d *DNSProvider) removeTxtRecord(domain string, recordID int) error {
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return readError(req, resp)
 	}
 
@@ -80,7 +80,7 @@ func (d *DNSProvider) addTxtRecord(fqdn, value string) (*txtRecordResponse, erro
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return nil, readError(req, resp)
 	}
 
diff --git a/providers/dns/dreamhost/client.go b/providers/dns/dreamhost/client.go
index 801751c8..8ddc4da8 100644
--- a/providers/dns/dreamhost/client.go
+++ b/providers/dns/dreamhost/client.go
@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"io"
+	"net/http"
 	"net/url"
 
 	"github.com/go-acme/lego/v4/log"
@@ -49,7 +50,7 @@ func (d *DNSProvider) updateTxtRecord(u fmt.Stringer) error {
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode != 200 {
+	if resp.StatusCode != http.StatusOK {
 		return fmt.Errorf("request failed with HTTP status code %d", resp.StatusCode)
 	}
 
diff --git a/providers/dns/dyn/client.go b/providers/dns/dyn/client.go
index bf87b654..fecef33c 100644
--- a/providers/dns/dyn/client.go
+++ b/providers/dns/dyn/client.go
@@ -121,7 +121,7 @@ func (d *DNSProvider) sendRequest(method, resource string, payload interface{})
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode >= 500 {
+	if resp.StatusCode >= http.StatusInternalServerError {
 		return nil, fmt.Errorf("API request failed with HTTP status code %d", resp.StatusCode)
 	}
 
@@ -131,9 +131,9 @@ func (d *DNSProvider) sendRequest(method, resource string, payload interface{})
 		return nil, err
 	}
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return nil, fmt.Errorf("API request failed with HTTP status code %d: %s", resp.StatusCode, dynRes.Messages)
-	} else if resp.StatusCode == 307 {
+	} else if resp.StatusCode == http.StatusTemporaryRedirect {
 		// TODO add support for HTTP 307 response and long running jobs
 		return nil, errors.New("API request returned HTTP 307. This is currently unsupported")
 	}
diff --git a/providers/dns/gandiv5/client.go b/providers/dns/gandiv5/client.go
index 106fa08c..4ec3e1b5 100644
--- a/providers/dns/gandiv5/client.go
+++ b/providers/dns/gandiv5/client.go
@@ -163,11 +163,11 @@ func (d *DNSProvider) do(req *http.Request, v interface{}) error {
 }
 
 func checkResponse(resp *http.Response) error {
-	if resp.StatusCode == 404 && resp.Request.Method == http.MethodGet {
+	if resp.StatusCode == http.StatusNotFound && resp.Request.Method == http.MethodGet {
 		return nil
 	}
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		data, err := readBody(resp)
 		if err != nil {
 			return fmt.Errorf("%d [%s] request failed: %w", resp.StatusCode, http.StatusText(resp.StatusCode), err)
diff --git a/providers/dns/glesys/client.go b/providers/dns/glesys/client.go
index 38fd466d..32207280 100644
--- a/providers/dns/glesys/client.go
+++ b/providers/dns/glesys/client.go
@@ -80,7 +80,7 @@ func (d *DNSProvider) sendRequest(method, resource string, payload interface{})
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return nil, fmt.Errorf("request failed with HTTP status code %d", resp.StatusCode)
 	}
 
diff --git a/providers/dns/joker/internal/dmapi/client.go b/providers/dns/joker/internal/dmapi/client.go
index 0f0e636a..1c8b34e9 100644
--- a/providers/dns/joker/internal/dmapi/client.go
+++ b/providers/dns/joker/internal/dmapi/client.go
@@ -154,7 +154,7 @@ func (c *Client) postRequest(cmd string, data url.Values) (*Response, error) {
 		return nil, err
 	}
 
-	if resp.StatusCode != 200 {
+	if resp.StatusCode != http.StatusOK {
 		return nil, fmt.Errorf("HTTP error %d [%s]: %v", resp.StatusCode, http.StatusText(resp.StatusCode), string(body))
 	}
 
diff --git a/providers/dns/mydnsjp/client.go b/providers/dns/mydnsjp/client.go
index 394ab818..16bfa734 100644
--- a/providers/dns/mydnsjp/client.go
+++ b/providers/dns/mydnsjp/client.go
@@ -21,7 +21,7 @@ func (d *DNSProvider) doRequest(domain, value, cmd string) error {
 
 	defer resp.Body.Close()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		var content []byte
 		content, err = io.ReadAll(resp.Body)
 		if err != nil {
diff --git a/providers/dns/mythicbeasts/client.go b/providers/dns/mythicbeasts/client.go
index 69d05535..195fb196 100644
--- a/providers/dns/mythicbeasts/client.go
+++ b/providers/dns/mythicbeasts/client.go
@@ -169,7 +169,7 @@ func (d *DNSProvider) createTXTRecord(zone, leaf, value string) error {
 		return fmt.Errorf("createTXTRecord: %w", err)
 	}
 
-	if resp.StatusCode != 200 {
+	if resp.StatusCode != http.StatusOK {
 		return fmt.Errorf("createTXTRecord: error in API: %d", resp.StatusCode)
 	}
 
@@ -221,7 +221,7 @@ func (d *DNSProvider) removeTXTRecord(zone, leaf, value string) error {
 		return fmt.Errorf("removeTXTRecord: %w", err)
 	}
 
-	if resp.StatusCode != 200 {
+	if resp.StatusCode != http.StatusOK {
 		return fmt.Errorf("removeTXTRecord: error in API: %d", resp.StatusCode)
 	}
 
diff --git a/providers/dns/namecheap/client.go b/providers/dns/namecheap/client.go
index f81f8c13..6d62df8b 100644
--- a/providers/dns/namecheap/client.go
+++ b/providers/dns/namecheap/client.go
@@ -110,7 +110,7 @@ func (d *DNSProvider) do(req *http.Request, out interface{}) error {
 		return err
 	}
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		var body []byte
 		body, err = readBody(resp)
 		if err != nil {
diff --git a/providers/dns/otc/client.go b/providers/dns/otc/client.go
index 21b5d1c5..6ad4cdfd 100644
--- a/providers/dns/otc/client.go
+++ b/providers/dns/otc/client.go
@@ -132,7 +132,7 @@ func (d *DNSProvider) loginRequest() error {
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return fmt.Errorf("OTC API request failed with HTTP status code %d", resp.StatusCode)
 	}
 
@@ -253,7 +253,7 @@ func (d *DNSProvider) sendRequest(method, resource string, payload interface{})
 	}
 	defer resp.Body.Close()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return nil, fmt.Errorf("OTC API request %s failed with HTTP status code %d", url, resp.StatusCode)
 	}
 
diff --git a/providers/dns/safedns/internal/client.go b/providers/dns/safedns/internal/client.go
index d34e97fc..2d18b569 100644
--- a/providers/dns/safedns/internal/client.go
+++ b/providers/dns/safedns/internal/client.go
@@ -94,7 +94,7 @@ func (c *Client) RemoveRecord(zone string, recordID int) error {
 	}
 	defer func() { _ = resp.Body.Close() }()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return readError(req, resp)
 	}
 
diff --git a/providers/dns/vercel/internal/client.go b/providers/dns/vercel/internal/client.go
index 6ce1687d..da68dcb7 100644
--- a/providers/dns/vercel/internal/client.go
+++ b/providers/dns/vercel/internal/client.go
@@ -60,7 +60,7 @@ func (c *Client) CreateRecord(zone string, record Record) (*CreateRecordResponse
 	}
 	defer func() { _ = resp.Body.Close() }()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return nil, readError(req, resp)
 	}
 
@@ -98,7 +98,7 @@ func (c *Client) DeleteRecord(zone string, recordID string) error {
 	}
 	defer func() { _ = resp.Body.Close() }()
 
-	if resp.StatusCode >= 400 {
+	if resp.StatusCode >= http.StatusBadRequest {
 		return readError(req, resp)
 	}