diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index fb8f438..e7c0ee9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,35 +15,35 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-    - name: Set up Go 1.x
-      uses: actions/setup-go@v2
-      with:
-        go-version: ^1.15
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v2
-
-    - name: Lint
-      uses: golangci/golangci-lint-action@v2
-      with:
-        # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
-        version: v1.33
-
-        # Optional: working directory, useful for monorepos
-        # working-directory: somedir
-
-        # Optional: golangci-lint command line arguments.
-        # args: --issues-exit-code=0
-        args: --config=.golangci.yml
-
-        # Optional: show only new issues if it's a pull request. The default value is `false`.
-        only-new-issues: false
-
-    - name: Get dependencies
-      run: |
-        go get -v -t -d ./...
-    - name: Test
-      run: go test -v ./...
-
-    - name: Build
-      run: go build -v .
+      - name: Set up Go 1.x
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.21.6
+
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
+
+      - name: Lint
+        uses: golangci/golangci-lint-action@v2
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.55.2
+
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+          args: --config=.golangci.yml
+
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          only-new-issues: false
+
+      - name: Get dependencies
+        run: |
+          go get -v -t -d ./...
+      - name: Test
+        run: go test -v ./...
+
+      - name: Build
+        run: go build -v .
diff --git a/.golangci.yml b/.golangci.yml
index a65ad48..2d058a2 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -46,6 +46,8 @@ linters-settings:
   gocyclo:
     # minimal code complexity to report, 30 by default (but we recommend 10-20)
     min-complexity: 15
+  cyclop:
+    max-complexity: 15
   godox:
     keywords:
       - "BUG"
@@ -116,10 +118,74 @@ linters-settings:
     allow-trailing-comment: true
     # Force newlines in end of case at this limit (0 = never).
     force-case-trailing-whitespace: 0
+  varnamelen:
+    # The longest distance, in source lines, that is being considered a "small scope." (defaults to 5)
+    # Variables used in at most this many lines will be ignored.
+    max-distance: 5
+    # The minimum length of a variable's name that is considered "long." (defaults to 3)
+    # Variable names that are at least this long will be ignored.
+    min-name-length: 3
+    # Check method receivers. (defaults to false)
+    check-receiver: false
+    # Check named return values. (defaults to false)
+    check-return: false
+    # Check type parameters. (defaults to false)
+    check-type-param: false
+    # Ignore "ok" variables that hold the bool return value of a type assertion. (defaults to false)
+    ignore-type-assert-ok: false
+    # Ignore "ok" variables that hold the bool return value of a map index. (defaults to false)
+    ignore-map-index-ok: false
+    # Ignore "ok" variables that hold the bool return value of a channel receive. (defaults to false)
+    ignore-chan-recv-ok: false
+    # Optional list of variable names that should be ignored completely. (defaults to empty list)
+    ignore-names:
+      - err
+    # Optional list of variable declarations that should be ignored completely. (defaults to empty list)
+    # Entries must be in one of the following forms (see below for examples):
+    # - for variables, parameters, named return values, method receivers, or type parameters:
+    #   <name> <type>  (<type> can also be a pointer/slice/map/chan/...)
+    # - for constants: const <name>
+    ignore-decls:
+      - t testing.T
+      - f *foo.Bar
+      - e error
+      - i int
+      - n int
+      - const C
+      - T any
+      - m map[string]int
+      - x int
+      - y int
+      - w io.Writer
+      - r io.Reader
+      - i int64
+      - f *os.File
+      - m int
+      - n int64
+      - i int32
+      - c *Context
 
 linters:
   enable-all: true
   disable:
+    - interfacer # is deprecated (since v1.38.0)
+    - scopelint # is deprecated (since v1.39.0)
+    - golint # is deprecated (since v1.41.0)
+    - maligned # is deprecated (since v1.38.0)
+    - ifshort # is deprecated (since v1.48.0)
+    - deadcode # is deprecated (since v1.49.0)
+    - nosnakecase # is deprecated (since v1.48.1)
+    - varcheck # is deprecated (since v1.49.0)
+    - exhaustivestruct # is deprecated (since v1.46.0)
+    - structcheck # is deprecated (since v1.49.0)
+    - rowserrcheck # is disabled because of generics
+    - sqlclosecheck # is disabled because of generics
+    - structcheck # is disabled because of generics
+    - wastedassign # is disabled because of generics
+    - wrapcheck
+    - exhaustruct # mad linter
+    - depguard
+    - nonamedreturns
 
 issues:
   exclude:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d821e96..9cd3caf 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [v1.2.3] - 2024-02-03
+### Updated
+- Updated Golang to 1.21.6 version.
+- Updated golangci linter to 1.55.2 version.
+
 ## [v1.2.2] - 2021-01-06
 ### Fixed
 - Fixed telnettest panic "handle read request error"
@@ -46,7 +51,8 @@ job was joined with tests workflow.
 ### Added
 - Initial implementation.
 
-[Unreleased]: https://github.com/gorcon/telnet/compare/v1.2.2...HEAD
+[Unreleased]: https://github.com/gorcon/telnet/compare/v1.2.3...HEAD
+[v1.2.3]: https://github.com/gorcon/telnet/compare/v1.2.2...v1.2.3
 [v1.2.2]: https://github.com/gorcon/telnet/compare/v1.2.1...v1.2.2
 [v1.2.1]: https://github.com/gorcon/telnet/compare/v1.2.0...v1.2.1
 [v1.2.0]: https://github.com/gorcon/telnet/compare/v1.1.0...v1.2.0
diff --git a/go.mod b/go.mod
index a74f722..a54fd4b 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,3 @@
 module github.com/gorcon/telnet
 
-go 1.15
+go 1.21
diff --git a/telnet.go b/telnet.go
index 9347651..6adb909 100644
--- a/telnet.go
+++ b/telnet.go
@@ -268,17 +268,17 @@ func (c *Conn) read(p []byte) (n int, err error) {
 // processReadResponse reads response data from TELNET connection
 // and writes them to writer (Stdout).
 func (c *Conn) processReadResponse(writer io.Writer) {
-	p := make([]byte, 1)
+	packet := make([]byte, 1)
 
 	for {
 		// Read 1 byte.
-		n, err := c.read(p)
+		n, err := c.read(packet)
 		if n <= 0 && err == nil {
 			continue
 		} else if n <= 0 && err != nil {
 			break
 		}
 
-		_, _ = writer.Write(p)
+		_, _ = writer.Write(packet)
 	}
 }