diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 1c406651e..f8e20dffc 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -16,7 +16,7 @@ jobs:
       - name: Checkout Code
         uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3 # v3.5.0
       - name: Setup Golang
-        uses: actions/setup-go@4d34df0c2316fe8122ab82dc22947d607c0c91f9 # v4.0.0
+        uses: actions/setup-go@v5
         with:
           go-version-file: go.mod
       - name: Test
@@ -28,7 +28,7 @@ jobs:
       - name: Checkout Code
         uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3 # v3.5.0
       - name: Setup Golang
-        uses: actions/setup-go@4d34df0c2316fe8122ab82dc22947d607c0c91f9 # v4.0.0
+        uses: actions/setup-go@v5
         with:
           go-version-file: go.mod
       - name: Build
diff --git a/cmd/postgres_exporter/pg_setting_test.go b/cmd/postgres_exporter/pg_setting_test.go
index 31ea33fe4..0e010444d 100644
--- a/cmd/postgres_exporter/pg_setting_test.go
+++ b/cmd/postgres_exporter/pg_setting_test.go
@@ -40,7 +40,7 @@ var fixtures = []fixture{
 			unit: "seconds",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_seconds_fixture_metric_seconds", help: "Server Parameter: seconds_fixture_metric [Units converted to seconds.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_seconds_fixture_metric_seconds", help: "Server Parameter: seconds_fixture_metric [Units converted to seconds.]", constLabels: {}, variableLabels: {}}`,
 		v: 5,
 	},
 	{
@@ -56,7 +56,7 @@ var fixtures = []fixture{
 			unit: "seconds",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_milliseconds_fixture_metric_seconds", help: "Server Parameter: milliseconds_fixture_metric [Units converted to seconds.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_milliseconds_fixture_metric_seconds", help: "Server Parameter: milliseconds_fixture_metric [Units converted to seconds.]", constLabels: {}, variableLabels: {}}`,
 		v: 5,
 	},
 	{
@@ -72,7 +72,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_eight_kb_fixture_metric_bytes", help: "Server Parameter: eight_kb_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_eight_kb_fixture_metric_bytes", help: "Server Parameter: eight_kb_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 139264,
 	},
 	{
@@ -88,7 +88,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_16_kb_real_fixture_metric_bytes", help: "Server Parameter: 16_kb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_16_kb_real_fixture_metric_bytes", help: "Server Parameter: 16_kb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 49152,
 	},
 	{
@@ -104,7 +104,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_16_mb_real_fixture_metric_bytes", help: "Server Parameter: 16_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_16_mb_real_fixture_metric_bytes", help: "Server Parameter: 16_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 5.0331648e+07,
 	},
 	{
@@ -120,7 +120,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_32_mb_real_fixture_metric_bytes", help: "Server Parameter: 32_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_32_mb_real_fixture_metric_bytes", help: "Server Parameter: 32_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 1.00663296e+08,
 	},
 	{
@@ -136,7 +136,7 @@ var fixtures = []fixture{
 			unit: "bytes",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_64_mb_real_fixture_metric_bytes", help: "Server Parameter: 64_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_64_mb_real_fixture_metric_bytes", help: "Server Parameter: 64_mb_real_fixture_metric [Units converted to bytes.]", constLabels: {}, variableLabels: {}}`,
 		v: 2.01326592e+08,
 	},
 	{
@@ -152,7 +152,7 @@ var fixtures = []fixture{
 			unit: "",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_bool_on_fixture_metric", help: "Server Parameter: bool_on_fixture_metric", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_bool_on_fixture_metric", help: "Server Parameter: bool_on_fixture_metric", constLabels: {}, variableLabels: {}}`,
 		v: 1,
 	},
 	{
@@ -168,7 +168,7 @@ var fixtures = []fixture{
 			unit: "",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_bool_off_fixture_metric", help: "Server Parameter: bool_off_fixture_metric", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_bool_off_fixture_metric", help: "Server Parameter: bool_off_fixture_metric", constLabels: {}, variableLabels: {}}`,
 		v: 0,
 	},
 	{
@@ -184,7 +184,7 @@ var fixtures = []fixture{
 			unit: "seconds",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_special_minus_one_value_seconds", help: "Server Parameter: special_minus_one_value [Units converted to seconds.]", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_special_minus_one_value_seconds", help: "Server Parameter: special_minus_one_value [Units converted to seconds.]", constLabels: {}, variableLabels: {}}`,
 		v: -1,
 	},
 	{
@@ -200,7 +200,7 @@ var fixtures = []fixture{
 			unit: "",
 			err:  "",
 		},
-		d: `Desc{fqName: "pg_settings_rds_rds_superuser_reserved_connections", help: "Server Parameter: rds.rds_superuser_reserved_connections", constLabels: {}, variableLabels: []}`,
+		d: `Desc{fqName: "pg_settings_rds_rds_superuser_reserved_connections", help: "Server Parameter: rds.rds_superuser_reserved_connections", constLabels: {}, variableLabels: {}}`,
 		v: 2,
 	},
 	{
@@ -214,7 +214,7 @@ var fixtures = []fixture{
 		n: normalised{
 			val:  10,
 			unit: "",
-			err:  `unknown unit for runtime variable: "nonexistent"`,
+			err:  `Unknown unit for runtime variable: "nonexistent"`,
 		},
 	},
 }
@@ -240,7 +240,7 @@ func (s *PgSettingSuite) TestNormaliseUnit(c *C) {
 func (s *PgSettingSuite) TestMetric(c *C) {
 	defer func() {
 		if r := recover(); r != nil {
-			if r.(error).Error() != `unknown unit for runtime variable: "nonexistent"` {
+			if r.(error).Error() != `Unknown unit for runtime variable: "nonexistent"` {
 				panic(r)
 			}
 		}
diff --git a/go.mod b/go.mod
index 18d6b9597..deceb0cfd 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/form3tech-oss/postgres_exporter
 
-go 1.19
+go 1.20
 
 require (
 	github.com/DATA-DOG/go-sqlmock v1.5.2