diff --git a/.golangci.yml b/.golangci.yml
index d2c93841..33a993a4 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -15,6 +15,7 @@ linters:
   - nilerr
   - prealloc
   - revive
+  - usestdlibvars
   - unconvert
   - tparallel
   - wastedassign
diff --git a/Makefile b/Makefile
index e578be9b..15e7cd26 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,5 @@
 BASE_IMAGE = golang:1.21-alpine3.19
-LINT_IMAGE = golangci/golangci-lint:v1.55.2
+LINT_IMAGE = golangci/golangci-lint:v1.56.2
 NODE_IMAGE = node:20-alpine3.19
 ALPINE_IMAGE = alpine:3.19
 RPI32_IMAGE = balenalib/raspberry-pi:bullseye-run-20230712
diff --git a/internal/conf/env/env_test.go b/internal/conf/env/env_test.go
index 3de2759a..47ff7e39 100644
--- a/internal/conf/env/env_test.go
+++ b/internal/conf/env/env_test.go
@@ -194,7 +194,7 @@ func FuzzLoad(f *testing.F) {
 	f.Add("MYPREFIX_MYDURATION", "a")
 	f.Add("MYPREFIX_MYDURATION_A", "a")
 
-	f.Fuzz(func(t *testing.T, key string, val string) {
+	f.Fuzz(func(_ *testing.T, key string, val string) {
 		env := map[string]string{
 			key: val,
 		}
diff --git a/internal/core/path_test.go b/internal/core/path_test.go
index edaa214d..9c861351 100644
--- a/internal/core/path_test.go
+++ b/internal/core/path_test.go
@@ -650,12 +650,12 @@ func TestPathSourceRegexp(t *testing.T) {
 					StatusCode: base.StatusOK,
 				}, stream, nil
 			},
-			onSetup: func(ctx *gortsplib.ServerHandlerOnSetupCtx) (*base.Response, *gortsplib.ServerStream, error) {
+			onSetup: func(_ *gortsplib.ServerHandlerOnSetupCtx) (*base.Response, *gortsplib.ServerStream, error) {
 				return &base.Response{
 					StatusCode: base.StatusOK,
 				}, stream, nil
 			},
-			onPlay: func(ctx *gortsplib.ServerHandlerOnPlayCtx) (*base.Response, error) {
+			onPlay: func(_ *gortsplib.ServerHandlerOnPlayCtx) (*base.Response, error) {
 				return &base.Response{
 					StatusCode: base.StatusOK,
 				}, nil
diff --git a/internal/formatprocessor/h264_test.go b/internal/formatprocessor/h264_test.go
index bf1fdeb1..a5d18495 100644
--- a/internal/formatprocessor/h264_test.go
+++ b/internal/formatprocessor/h264_test.go
@@ -202,7 +202,7 @@ func TestH264EmptyPacket(t *testing.T) {
 }
 
 func FuzzRTPH264ExtractParams(f *testing.F) {
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		rtpH264ExtractParams(b)
 	})
 }
diff --git a/internal/formatprocessor/h265_test.go b/internal/formatprocessor/h265_test.go
index 7ad5d86c..dd478d24 100644
--- a/internal/formatprocessor/h265_test.go
+++ b/internal/formatprocessor/h265_test.go
@@ -198,7 +198,7 @@ func TestH265EmptyPacket(t *testing.T) {
 }
 
 func FuzzRTPH265ExtractParams(f *testing.F) {
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		rtpH265ExtractParams(b)
 	})
 }
diff --git a/internal/protocols/rtmp/amf0/unmarshal_test.go b/internal/protocols/rtmp/amf0/unmarshal_test.go
index d8ff0a55..b4564ec9 100644
--- a/internal/protocols/rtmp/amf0/unmarshal_test.go
+++ b/internal/protocols/rtmp/amf0/unmarshal_test.go
@@ -307,7 +307,7 @@ func FuzzUnmarshal(f *testing.F) {
 		f.Add(ca.enc)
 	}
 
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		Unmarshal(b) //nolint:errcheck
 	})
 }
diff --git a/internal/protocols/rtmp/chunk/chunk_test.go b/internal/protocols/rtmp/chunk/chunk_test.go
index 9748aaae..750ec753 100644
--- a/internal/protocols/rtmp/chunk/chunk_test.go
+++ b/internal/protocols/rtmp/chunk/chunk_test.go
@@ -158,28 +158,28 @@ func TestChunkMarshal(t *testing.T) {
 }
 
 func FuzzChunk0Read(f *testing.F) {
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		var chunk Chunk0
 		chunk.Read(bytes.NewReader(b), 65536, false) //nolint:errcheck
 	})
 }
 
 func FuzzChunk1Read(f *testing.F) {
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		var chunk Chunk1
 		chunk.Read(bytes.NewReader(b), 65536, false) //nolint:errcheck
 	})
 }
 
 func FuzzChunk2Read(f *testing.F) {
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		var chunk Chunk2
 		chunk.Read(bytes.NewReader(b), 65536, false) //nolint:errcheck
 	})
 }
 
 func FuzzChunk3Read(f *testing.F) {
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		var chunk Chunk3
 		chunk.Read(bytes.NewReader(b), 65536, true) //nolint:errcheck
 	})
diff --git a/internal/protocols/rtmp/message/reader_test.go b/internal/protocols/rtmp/message/reader_test.go
index ff8d3386..5ce3af1d 100644
--- a/internal/protocols/rtmp/message/reader_test.go
+++ b/internal/protocols/rtmp/message/reader_test.go
@@ -297,7 +297,7 @@ func FuzzReader(f *testing.F) {
 		0x01, 0x00, 0x00, 0x00, 0x88, 0x68, 0x76, 0x63,
 		0x31, 0x01, 0x02, 0x03,
 	})
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		bc := bytecounter.NewReader(bytes.NewReader(b))
 		r := NewReader(bc, bc, nil)
 		r.Read() //nolint:errcheck
diff --git a/internal/protocols/rtmp/rawmessage/reader_test.go b/internal/protocols/rtmp/rawmessage/reader_test.go
index 6b65b28e..ee59c393 100644
--- a/internal/protocols/rtmp/rawmessage/reader_test.go
+++ b/internal/protocols/rtmp/rawmessage/reader_test.go
@@ -205,7 +205,7 @@ func TestReader(t *testing.T) {
 		t.Run(ca.name, func(t *testing.T) {
 			var buf bytes.Buffer
 			br := bytecounter.NewReader(&buf)
-			r := NewReader(br, br, func(count uint32) error {
+			r := NewReader(br, br, func(_ uint32) error {
 				return nil
 			})
 
@@ -234,7 +234,7 @@ func TestReaderAcknowledge(t *testing.T) {
 
 			var buf bytes.Buffer
 			bc := bytecounter.NewReader(&buf)
-			r := NewReader(bc, bc, func(count uint32) error {
+			r := NewReader(bc, bc, func(_ uint32) error {
 				close(onAckCalled)
 				return nil
 			})
@@ -269,9 +269,9 @@ func TestReaderAcknowledge(t *testing.T) {
 }
 
 func FuzzReader(f *testing.F) {
-	f.Fuzz(func(t *testing.T, b []byte) {
+	f.Fuzz(func(_ *testing.T, b []byte) {
 		br := bytecounter.NewReader(bytes.NewReader(b))
-		r := NewReader(br, br, func(count uint32) error {
+		r := NewReader(br, br, func(_ uint32) error {
 			return nil
 		})
 
diff --git a/internal/protocols/websocket/serverconn.go b/internal/protocols/websocket/serverconn.go
index f0e81922..c5fd3506 100644
--- a/internal/protocols/websocket/serverconn.go
+++ b/internal/protocols/websocket/serverconn.go
@@ -18,7 +18,7 @@ var (
 )
 
 var upgrader = websocket.Upgrader{
-	CheckOrigin: func(r *http.Request) bool {
+	CheckOrigin: func(_ *http.Request) bool {
 		return true
 	},
 }
diff --git a/internal/protocols/websocket/serverconn_test.go b/internal/protocols/websocket/serverconn_test.go
index 8b40efb7..e6d5ce9d 100644
--- a/internal/protocols/websocket/serverconn_test.go
+++ b/internal/protocols/websocket/serverconn_test.go
@@ -39,7 +39,7 @@ func TestServerConn(t *testing.T) {
 	defer res.Body.Close()
 	defer c.Close() //nolint:errcheck
 
-	c.SetPingHandler(func(msg string) error {
+	c.SetPingHandler(func(_ string) error {
 		close(pingReceived)
 		return nil
 	})
diff --git a/internal/record/agent_test.go b/internal/record/agent_test.go
index 4e4dd3dc..9c394b6d 100644
--- a/internal/record/agent_test.go
+++ b/internal/record/agent_test.go
@@ -167,10 +167,10 @@ func TestAgent(t *testing.T) {
 				SegmentDuration: 1 * time.Second,
 				PathName:        "mypath",
 				Stream:          stream,
-				OnSegmentCreate: func(fpath string) {
+				OnSegmentCreate: func(_ string) {
 					segCreated <- struct{}{}
 				},
-				OnSegmentComplete: func(fpath string) {
+				OnSegmentComplete: func(_ string) {
 					segDone <- struct{}{}
 				},
 				Parent:       &test.NilLogger{},
diff --git a/internal/servers/rtmp/server_test.go b/internal/servers/rtmp/server_test.go
index 24a1b8ef..6bf292eb 100644
--- a/internal/servers/rtmp/server_test.go
+++ b/internal/servers/rtmp/server_test.go
@@ -258,7 +258,7 @@ func TestServerRead(t *testing.T) {
 				},
 			})
 
-			r.OnDataH264(func(pts time.Duration, au [][]byte) {
+			r.OnDataH264(func(_ time.Duration, au [][]byte) {
 				require.Equal(t, [][]byte{
 					test.FormatH264.SPS,
 					test.FormatH264.PPS,
diff --git a/internal/servers/rtsp/server_test.go b/internal/servers/rtsp/server_test.go
index 943910b6..c732d214 100644
--- a/internal/servers/rtsp/server_test.go
+++ b/internal/servers/rtsp/server_test.go
@@ -228,7 +228,7 @@ func TestServerRead(t *testing.T) {
 
 	recv := make(chan struct{})
 
-	reader.OnPacketRTPAny(func(m *description.Media, f format.Format, p *rtp.Packet) {
+	reader.OnPacketRTPAny(func(_ *description.Media, _ format.Format, p *rtp.Packet) {
 		require.Equal(t, &rtp.Packet{
 			Header: rtp.Header{
 				Version:        2,
diff --git a/internal/staticsources/hls/source.go b/internal/staticsources/hls/source.go
index 7e9d2b87..bbffce65 100644
--- a/internal/staticsources/hls/source.go
+++ b/internal/staticsources/hls/source.go
@@ -123,7 +123,7 @@ func (s *Source) Run(params defs.StaticSourceRunParams) error {
 						}},
 					}
 
-					c.OnDataH26x(track, func(pts time.Duration, dts time.Duration, au [][]byte) {
+					c.OnDataH26x(track, func(pts time.Duration, _ time.Duration, au [][]byte) {
 						stream.WriteUnit(medi, medi.Formats[0], &unit.H264{
 							Base: unit.Base{
 								NTP: time.Now(),
@@ -144,7 +144,7 @@ func (s *Source) Run(params defs.StaticSourceRunParams) error {
 						}},
 					}
 
-					c.OnDataH26x(track, func(pts time.Duration, dts time.Duration, au [][]byte) {
+					c.OnDataH26x(track, func(pts time.Duration, _ time.Duration, au [][]byte) {
 						stream.WriteUnit(medi, medi.Formats[0], &unit.H265{
 							Base: unit.Base{
 								NTP: time.Now(),
diff --git a/internal/staticsources/rtsp/source_test.go b/internal/staticsources/rtsp/source_test.go
index ebdb3e99..6741d0fd 100644
--- a/internal/staticsources/rtsp/source_test.go
+++ b/internal/staticsources/rtsp/source_test.go
@@ -69,12 +69,12 @@ func TestSource(t *testing.T) {
 							StatusCode: base.StatusOK,
 						}, stream, nil
 					},
-					onSetup: func(ctx *gortsplib.ServerHandlerOnSetupCtx) (*base.Response, *gortsplib.ServerStream, error) {
+					onSetup: func(_ *gortsplib.ServerHandlerOnSetupCtx) (*base.Response, *gortsplib.ServerStream, error) {
 						return &base.Response{
 							StatusCode: base.StatusOK,
 						}, stream, nil
 					},
-					onPlay: func(ctx *gortsplib.ServerHandlerOnPlayCtx) (*base.Response, error) {
+					onPlay: func(_ *gortsplib.ServerHandlerOnPlayCtx) (*base.Response, error) {
 						go func() {
 							time.Sleep(100 * time.Millisecond)
 							err := stream.WritePacketRTP(media0, &rtp.Packet{
@@ -195,7 +195,7 @@ func TestRTSPSourceNoPassword(t *testing.T) {
 					StatusCode: base.StatusOK,
 				}, stream, nil
 			},
-			onSetup: func(ctx *gortsplib.ServerHandlerOnSetupCtx) (*base.Response, *gortsplib.ServerStream, error) {
+			onSetup: func(_ *gortsplib.ServerHandlerOnSetupCtx) (*base.Response, *gortsplib.ServerStream, error) {
 				go func() {
 					time.Sleep(100 * time.Millisecond)
 					err := stream.WritePacketRTP(media0, &rtp.Packet{
@@ -216,7 +216,7 @@ func TestRTSPSourceNoPassword(t *testing.T) {
 					StatusCode: base.StatusOK,
 				}, stream, nil
 			},
-			onPlay: func(ctx *gortsplib.ServerHandlerOnPlayCtx) (*base.Response, error) {
+			onPlay: func(_ *gortsplib.ServerHandlerOnPlayCtx) (*base.Response, error) {
 				return &base.Response{
 					StatusCode: base.StatusOK,
 				}, nil
@@ -263,12 +263,12 @@ func TestRTSPSourceRange(t *testing.T) {
 
 			s := gortsplib.Server{
 				Handler: &testServer{
-					onDescribe: func(ctx *gortsplib.ServerHandlerOnDescribeCtx) (*base.Response, *gortsplib.ServerStream, error) {
+					onDescribe: func(_ *gortsplib.ServerHandlerOnDescribeCtx) (*base.Response, *gortsplib.ServerStream, error) {
 						return &base.Response{
 							StatusCode: base.StatusOK,
 						}, stream, nil
 					},
-					onSetup: func(ctx *gortsplib.ServerHandlerOnSetupCtx) (*base.Response, *gortsplib.ServerStream, error) {
+					onSetup: func(_ *gortsplib.ServerHandlerOnSetupCtx) (*base.Response, *gortsplib.ServerStream, error) {
 						return &base.Response{
 							StatusCode: base.StatusOK,
 						}, stream, nil