diff --git a/prometheus/go_collector.go b/prometheus/go_collector.go
index 5d6fe60..69e2ec8 100644
--- a/prometheus/go_collector.go
+++ b/prometheus/go_collector.go
@@ -280,35 +280,6 @@ type memStatsMetrics []struct {
 	valType ValueType
 }
 
-func goRuntimeEnvVarsMetrics() runtimeEnvVarsMetrics {
-	return runtimeEnvVarsMetrics{
-		{
-			desc: NewDesc(
-				"go_gogc_percent",
-				"Value of GOGC (percentage).",
-				nil, nil,
-			),
-			origMetricName: "/gc/gogc:percent",
-		},
-		{
-			desc: NewDesc(
-				"go_gomemlimit",
-				"Value of GOMEMLIMIT (bytes).",
-				nil, nil,
-			),
-			origMetricName: "/gc/gomemlimit:bytes",
-		},
-		{
-			desc: NewDesc(
-				"go_gomaxprocs",
-				"Value of GOMAXPROCS, i.e number of usable threads.",
-				nil, nil,
-			),
-			origMetricName: "/sched/gomaxprocs:threads",
-		},
-	}
-}
-
 type runtimeEnvVarsMetrics []struct { // I couldn't come up with a better name. Any suggestions?
 	desc           *Desc
 	origMetricName string
diff --git a/prometheus/go_collector_go120.go b/prometheus/go_collector_go120.go
new file mode 100644
index 0000000..5a98df7
--- /dev/null
+++ b/prometheus/go_collector_go120.go
@@ -0,0 +1,30 @@
+// Copyright 2024 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build !go1.21
+// +build !go1.21
+
+package prometheus
+
+func goRuntimeEnvVarsMetrics() runtimeEnvVarsMetrics {
+	return runtimeEnvVarsMetrics{
+		{
+			desc: NewDesc(
+				"go_gomaxprocs",
+				"Value of GOMAXPROCS, i.e number of usable threads.",
+				nil, nil,
+			),
+			origMetricName: "/sched/gomaxprocs:threads",
+		},
+	}
+}
diff --git a/prometheus/go_collector_go121.go b/prometheus/go_collector_go121.go
new file mode 100644
index 0000000..42500d0
--- /dev/null
+++ b/prometheus/go_collector_go121.go
@@ -0,0 +1,46 @@
+// Copyright 2024 The Prometheus Authors
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+//go:build go1.21
+// +build go1.21
+
+package prometheus
+
+func goRuntimeEnvVarsMetrics() runtimeEnvVarsMetrics {
+	return runtimeEnvVarsMetrics{
+		{
+			desc: NewDesc(
+				"go_gogc_percent",
+				"Value of GOGC (percentage).",
+				nil, nil,
+			),
+			origMetricName: "/gc/gogc:percent",
+		},
+		{
+			desc: NewDesc(
+				"go_gomemlimit",
+				"Value of GOMEMLIMIT (bytes).",
+				nil, nil,
+			),
+			origMetricName: "/gc/gomemlimit:bytes",
+		},
+		{
+			desc: NewDesc(
+				"go_gomaxprocs",
+				"Value of GOMAXPROCS, i.e number of usable threads.",
+				nil, nil,
+			),
+			origMetricName: "/sched/gomaxprocs:threads",
+		},
+	}
+}