diff --git a/types/context.go b/types/context.go
index 7c8ec950792a..5c3a072053b9 100644
--- a/types/context.go
+++ b/types/context.go
@@ -142,11 +142,12 @@ func (c Context) WithHeaderHash(hash []byte) Context {
 	return c
 }
 
-// WithBlockTime returns a Context with an updated CometBFT block header time in UTC time
+// WithBlockTime returns a Context with an updated CometBFT block header time in UTC with no monotonic component.
+// Stripping the monotonic component is for time equality.
 func (c Context) WithBlockTime(newTime time.Time) Context {
 	newHeader := c.BlockHeader()
 	// https://github.com/gogo/protobuf/issues/519
-	newHeader.Time = newTime.UTC()
+	newHeader.Time = newTime.Round(0).UTC()
 	return c.WithBlockHeader(newHeader)
 }
 
diff --git a/types/context_test.go b/types/context_test.go
index 746e2bc364b2..10cfba092219 100644
--- a/types/context_test.go
+++ b/types/context_test.go
@@ -7,6 +7,7 @@ import (
 
 	abci "github.com/cometbft/cometbft/abci/types"
 	cmtproto "github.com/cometbft/cometbft/proto/tendermint/types"
+	cmttime "github.com/cometbft/cometbft/types/time"
 	"github.com/golang/mock/gomock"
 	"github.com/stretchr/testify/suite"
 
@@ -163,6 +164,14 @@ func (s *contextTestSuite) TestContextHeader() {
 	s.Require().Equal(proposer.Bytes(), ctx.BlockHeader().ProposerAddress)
 }
 
+func (s *contextTestSuite) TestWithBlockTime() {
+	now := time.Now()
+	ctx := types.NewContext(nil, cmtproto.Header{}, false, nil)
+	ctx = ctx.WithBlockTime(now)
+	cmttime2 := cmttime.Canonical(now)
+	s.Require().Equal(ctx.BlockTime(), cmttime2)
+}
+
 func (s *contextTestSuite) TestContextHeaderClone() {
 	cases := map[string]struct {
 		h cmtproto.Header