diff --git a/prometheus/registry_test.go b/prometheus/registry_test.go
index b9d9f13..48112ba 100644
--- a/prometheus/registry_test.go
+++ b/prometheus/registry_test.go
@@ -53,7 +53,7 @@ func (u uncheckedCollector) Collect(c chan<- prometheus.Metric) {
 func testHandler(t testing.TB) {
 	// TODO(beorn7): This test is a bit too "end-to-end". It tests quite a
 	// few moving parts that are not strongly coupled. They could/should be
-	// tested separately. However, the changes planned for v0.10 will
+	// tested separately. However, the changes planned for v2 will
 	// require a major rework of this test anyway, at which time I will
 	// structure it in a better way.
 
diff --git a/prometheus/summary.go b/prometheus/summary.go
index 1574b0f..ec663ec 100644
--- a/prometheus/summary.go
+++ b/prometheus/summary.go
@@ -39,7 +39,7 @@ const quantileLabel = "quantile"
 // A typical use-case is the observation of request latencies. By default, a
 // Summary provides the median, the 90th and the 99th percentile of the latency
 // as rank estimations. However, the default behavior will change in the
-// upcoming v0.10 of the library. There will be no rank estimations at all by
+// upcoming v1.0.0 of the library. There will be no rank estimations at all by
 // default. For a sane transition, it is recommended to set the desired rank
 // estimations explicitly.
 //
@@ -61,7 +61,7 @@ type Summary interface {
 // DefObjectives are the default Summary quantile values.
 //
 // Deprecated: DefObjectives will not be used as the default objectives in
-// v0.10 of the library. The default Summary will have no quantiles then.
+// v1.0.0 of the library. The default Summary will have no quantiles then.
 var (
 	DefObjectives = map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.99: 0.001}
 
@@ -86,7 +86,7 @@ const (
 // mandatory to set Name to a non-empty string. While all other fields are
 // optional and can safely be left at their zero value, it is recommended to set
 // a help string and to explicitly set the Objectives field to the desired value
-// as the default value will change in the upcoming v0.10 of the library.
+// as the default value will change in the upcoming v1.0.0 of the library.
 type SummaryOpts struct {
 	// Namespace, Subsystem, and Name are components of the fully-qualified
 	// name of the Summary (created by joining these components with
@@ -128,7 +128,7 @@ type SummaryOpts struct {
 	// set it to an empty map (i.e. map[float64]float64{}).
 	//
 	// Note that the current value of DefObjectives is deprecated. It will
-	// be replaced by an empty map in v0.10 of the library. Please
+	// be replaced by an empty map in v1.0.0 of the library. Please
 	// explicitly set Objectives to the desired value to avoid problems
 	// during the transition.
 	Objectives map[float64]float64