diff --git a/pkg/api/apis/operators/v1alpha1/clusterserviceversion.go b/pkg/api/apis/operators/v1alpha1/clusterserviceversion.go
index 6819ff5ef20..9dd6f56f8da 100644
--- a/pkg/api/apis/operators/v1alpha1/clusterserviceversion.go
+++ b/pkg/api/apis/operators/v1alpha1/clusterserviceversion.go
@@ -10,6 +10,11 @@ import (
 
 const (
 	CopiedLabelKey = "olm.copiedFrom"
+
+	// ConditionsLengthLimit is the maximum length of Status.Conditions of a
+	// given ClusterServiceVersion object. The oldest condition(s) are removed
+	// from the list as it grows over time to keep it at limit.
+	ConditionsLengthLimit = 20
 )
 
 // obsoleteReasons are the set of reasons that mean a CSV should no longer be processed as active
@@ -67,6 +72,18 @@ func (c *ClusterServiceVersion) SetPhaseWithEvent(phase ClusterServiceVersionPha
 
 // SetPhase sets the current phase and adds a condition if necessary
 func (c *ClusterServiceVersion) SetPhase(phase ClusterServiceVersionPhase, reason ConditionReason, message string, now metav1.Time) {
+	newCondition := func() ClusterServiceVersionCondition {
+		return ClusterServiceVersionCondition{
+			Phase:              c.Status.Phase,
+			LastTransitionTime: c.Status.LastTransitionTime,
+			LastUpdateTime:     c.Status.LastUpdateTime,
+			Message:            message,
+			Reason:             reason,
+		}
+	}
+
+	defer c.TrimConditionsIfLimitExceeded()
+
 	c.Status.LastUpdateTime = now
 	if c.Status.Phase != phase {
 		c.Status.Phase = phase
@@ -75,23 +92,13 @@ func (c *ClusterServiceVersion) SetPhase(phase ClusterServiceVersionPhase, reaso
 	c.Status.Message = message
 	c.Status.Reason = reason
 	if len(c.Status.Conditions) == 0 {
-		c.Status.Conditions = append(c.Status.Conditions, ClusterServiceVersionCondition{
-			Phase:              c.Status.Phase,
-			LastTransitionTime: c.Status.LastTransitionTime,
-			LastUpdateTime:     c.Status.LastUpdateTime,
-			Message:            message,
-			Reason:             reason,
-		})
+		c.Status.Conditions = append(c.Status.Conditions, newCondition())
+		return
 	}
+
 	previousCondition := c.Status.Conditions[len(c.Status.Conditions)-1]
 	if previousCondition.Phase != c.Status.Phase || previousCondition.Reason != c.Status.Reason {
-		c.Status.Conditions = append(c.Status.Conditions, ClusterServiceVersionCondition{
-			Phase:              c.Status.Phase,
-			LastTransitionTime: c.Status.LastTransitionTime,
-			LastUpdateTime:     c.Status.LastUpdateTime,
-			Message:            message,
-			Reason:             reason,
-		})
+		c.Status.Conditions = append(c.Status.Conditions, newCondition())
 	}
 }
 
@@ -190,3 +197,12 @@ func (set InstallModeSet) Supports(operatorNamespace string, namespaces []string
 
 	return nil
 }
+
+func (c *ClusterServiceVersion) TrimConditionsIfLimitExceeded() {
+	if len(c.Status.Conditions) <= ConditionsLengthLimit {
+		return
+	}
+
+	firstIndex := len(c.Status.Conditions) - ConditionsLengthLimit
+	c.Status.Conditions = c.Status.Conditions[firstIndex:len(c.Status.Conditions)]
+}
diff --git a/pkg/api/apis/operators/v1alpha1/clusterserviceversion_test.go b/pkg/api/apis/operators/v1alpha1/clusterserviceversion_test.go
index c9bb8e44800..3c545e014b2 100644
--- a/pkg/api/apis/operators/v1alpha1/clusterserviceversion_test.go
+++ b/pkg/api/apis/operators/v1alpha1/clusterserviceversion_test.go
@@ -4,9 +4,11 @@ import (
 	"fmt"
 	"testing"
 
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	corev1 "k8s.io/api/core/v1"
-	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 func TestSetRequirementStatus(t *testing.T) {
@@ -282,3 +284,111 @@ func TestSupports(t *testing.T) {
 		})
 	}
 }
+
+func TestSetPhaseWithConditionsLengthAtLimit(t *testing.T) {
+	csv := ClusterServiceVersion{}
+
+	limit := ConditionsLengthLimit
+	csv.Status.Conditions = helperNewConditions(limit)
+
+	now := metav1.Now()
+
+	// We expect the oldest condition to be removed.
+	oldConditionsWant := csv.Status.Conditions[1:]
+	lastAddedConditionWant := ClusterServiceVersionCondition{
+		Phase:              ClusterServiceVersionPhase("Pending"),
+		LastTransitionTime: now,
+		LastUpdateTime:     now,
+		Message:            "message",
+		Reason:             ConditionReason("reason"),
+	}
+
+	csv.SetPhase("Pending", "reason", "message", now)
+
+	conditionsGot := csv.Status.Conditions
+	assert.Equal(t, limit, len(conditionsGot))
+
+	oldConditionsGot := conditionsGot[0 : len(conditionsGot)-1]
+	assert.EqualValues(t, oldConditionsWant, oldConditionsGot)
+
+	lastAddedConditionGot := conditionsGot[len(conditionsGot)-1]
+	assert.Equal(t, lastAddedConditionWant, lastAddedConditionGot)
+}
+
+func TestSetPhaseWithConditionsLengthBelowLimit(t *testing.T) {
+	csv := ClusterServiceVersion{}
+
+	limit := ConditionsLengthLimit
+	csv.Status.Conditions = helperNewConditions(limit - 1)
+
+	now := metav1.Now()
+
+	// We expect no condition to be removed from the list.
+	oldConditionsWant := csv.Status.Conditions
+	lastAddedConditionWant := ClusterServiceVersionCondition{
+		Phase:              ClusterServiceVersionPhase("Pending"),
+		LastTransitionTime: now,
+		LastUpdateTime:     now,
+		Message:            "message",
+		Reason:             ConditionReason("reason"),
+	}
+
+	csv.SetPhase("Pending", "reason", "message", now)
+
+	conditionsGot := csv.Status.Conditions
+	assert.Equal(t, limit, len(conditionsGot))
+
+	oldConditionsGot := conditionsGot[0 : len(conditionsGot)-1]
+	assert.EqualValues(t, oldConditionsWant, oldConditionsGot)
+
+	lastAddedConditionGot := conditionsGot[len(conditionsGot)-1]
+	assert.Equal(t, lastAddedConditionWant, lastAddedConditionGot)
+}
+
+func TestSetPhaseWithLimitExceeded(t *testing.T) {
+	csv := ClusterServiceVersion{}
+
+	limit, extra := ConditionsLengthLimit, 10
+	csv.Status.Conditions = helperNewConditions(limit + extra)
+
+	now := metav1.Now()
+
+	// We expect extra plus 1 condition(s) to be removed from the list.
+	oldConditionsWant := csv.Status.Conditions[extra+1:]
+	lastAddedConditionWant := ClusterServiceVersionCondition{
+		Phase:              ClusterServiceVersionPhase("Pending"),
+		LastTransitionTime: now,
+		LastUpdateTime:     now,
+		Message:            "message",
+		Reason:             ConditionReason("reason"),
+	}
+
+	csv.SetPhase("Pending", "reason", "message", now)
+
+	conditionsGot := csv.Status.Conditions
+	assert.Equal(t, limit, len(conditionsGot))
+
+	oldConditionsGot := conditionsGot[0 : len(conditionsGot)-1]
+	assert.EqualValues(t, oldConditionsWant, oldConditionsGot)
+
+	lastAddedConditionGot := conditionsGot[len(conditionsGot)-1]
+	assert.Equal(t, lastAddedConditionWant, lastAddedConditionGot)
+}
+
+func helperNewConditions(count int) []ClusterServiceVersionCondition {
+	conditions := make([]ClusterServiceVersionCondition, 0)
+
+	for i := 1; i <= count; i++ {
+		now := metav1.Now()
+		condition := ClusterServiceVersionCondition{
+			Phase:              ClusterServiceVersionPhase(fmt.Sprintf("phase-%d", i)),
+			LastTransitionTime: now,
+			LastUpdateTime:     now,
+			Message:            fmt.Sprintf("message-%d", i),
+			Reason:             ConditionReason(fmt.Sprintf("reason-%d", i)),
+		}
+		conditions = append(conditions, condition)
+	}
+
+	return conditions
+}