diff --git a/ci/Dockerfile b/ci/Dockerfile
index af11f69e..dedd69b6 100644
--- a/ci/Dockerfile
+++ b/ci/Dockerfile
@@ -12,7 +12,7 @@
 #   See the License for the specific language governing permissions and
 #   limitations under the License.
 
-FROM golang:1.21
+FROM golang:1.23
 
 WORKDIR /go/src
 
diff --git a/go.mod b/go.mod
index c5d21185..082bb2f1 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/compose-spec/compose-go/v2
 
-go 1.21
+go 1.23
 
 require (
 	github.com/distribution/reference v0.5.0
diff --git a/loader/loader_test.go b/loader/loader_test.go
index b6167566..8c06c5dd 100644
--- a/loader/loader_test.go
+++ b/loader/loader_test.go
@@ -1921,7 +1921,6 @@ services:
 		},
 	}
 	for _, testcase := range testcases {
-		testcase := testcase
 		t.Run(testcase.doc, func(t *testing.T) {
 			config, err := loadYAML(testcase.yaml)
 			assert.NilError(t, err)
diff --git a/template/template_test.go b/template/template_test.go
index c52fdcd9..2309ed23 100644
--- a/template/template_test.go
+++ b/template/template_test.go
@@ -218,7 +218,6 @@ func TestInterpolationExternalInterference(t *testing.T) {
 		},
 	}
 	for i, tc := range testCases {
-		tc := tc
 		t.Run(fmt.Sprintf("Interpolation Should not be impacted by outer text: %d", i), func(t *testing.T) {
 			result, err := Substitute(tc.template, defaultMapping)
 			assert.NilError(t, err)
diff --git a/template/variables_test.go b/template/variables_test.go
index 7239b016..b2b18f64 100644
--- a/template/variables_test.go
+++ b/template/variables_test.go
@@ -193,7 +193,6 @@ func TestExtractVariables(t *testing.T) {
 		},
 	}
 	for _, tc := range testCases {
-		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			actual := ExtractVariables(tc.dict, DefaultPattern)
 			assert.Check(t, is.DeepEqual(actual, tc.expected))
diff --git a/types/labels.go b/types/labels.go
index 713c28f9..7ea5edc4 100644
--- a/types/labels.go
+++ b/types/labels.go
@@ -55,7 +55,6 @@ func (l Labels) AsList() []string {
 func (l Labels) ToMappingWithEquals() MappingWithEquals {
 	mapping := MappingWithEquals{}
 	for k, v := range l {
-		v := v
 		mapping[k] = &v
 	}
 	return mapping
diff --git a/types/mapping.go b/types/mapping.go
index 63f6e58b..87f16314 100644
--- a/types/mapping.go
+++ b/types/mapping.go
@@ -157,7 +157,6 @@ func (m Mapping) Values() []string {
 func (m Mapping) ToMappingWithEquals() MappingWithEquals {
 	mapping := MappingWithEquals{}
 	for k, v := range m {
-		v := v
 		mapping[k] = &v
 	}
 	return mapping
diff --git a/types/types_test.go b/types/types_test.go
index 500f8b6f..ecca54c7 100644
--- a/types/types_test.go
+++ b/types/types_test.go
@@ -318,7 +318,6 @@ func TestMarshalServiceEntrypoint(t *testing.T) {
 	}
 
 	for _, tc := range tcs {
-		tc := tc
 		t.Run(tc.name, func(t *testing.T) {
 			t.Parallel()