diff --git a/x/upgrade/CHANGELOG.md b/x/upgrade/CHANGELOG.md
index 4e0521d344..6d84386e94 100644
--- a/x/upgrade/CHANGELOG.md
+++ b/x/upgrade/CHANGELOG.md
@@ -27,6 +27,7 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 ### Bug Fixes
 * (x/upgrade) [#23179](https://github.com/cosmos/cosmos-sdk/pull/23179) Register missing implementation for SoftwareUpgradeProposal to avoid no concrete type registered for type URL /cosmos.upgrade.v1beta1.SoftwareUpgradeProposal against interface *v1beta1.Content error.
+* (x/upgrade) [#23378](https://github.com/cosmos/cosmos-sdk/pull/23378) Register missing implementation for CancelSoftwareUpgradeProposal to avoid no concrete type registered for type URL /cosmos.upgrade.v1beta1.CancelSoftwareUpgradeProposal against interface *v1beta1.Content error.
 
 ## [v0.2.0-rc.1](https://github.com/cosmos/cosmos-sdk/releases/tag/x/upgrade/v0.2.0-rc.1) - 2024-12-18
 
diff --git a/x/upgrade/types/codec.go b/x/upgrade/types/codec.go
index abfd8a8560..02ddc5f10d 100644
--- a/x/upgrade/types/codec.go
+++ b/x/upgrade/types/codec.go
@@ -28,5 +28,9 @@ func RegisterInterfaces(registrar registry.InterfaceRegistrar) {
 		(*v1beta1.Content)(nil),
 		&SoftwareUpgradeProposal{},
 	)
+	registrar.RegisterImplementations(
+		(*v1beta1.Content)(nil),
+		&CancelSoftwareUpgradeProposal{},
+	)
 	msgservice.RegisterMsgServiceDesc(registrar, &_Msg_serviceDesc)
 }
diff --git a/x/upgrade/types/codec_test.go b/x/upgrade/types/codec_test.go
index 27198d1d12..a1c0387d27 100644
--- a/x/upgrade/types/codec_test.go
+++ b/x/upgrade/types/codec_test.go
@@ -25,9 +25,17 @@ func TestInterfaceRegistrationOfContent(t *testing.T) {
 	})
 	require.NoError(t, err)
 	RegisterInterfaces(registrar)
-	val := &gogoprotoany.Any{
-		TypeUrl: "/cosmos.upgrade.v1beta1.SoftwareUpgradeProposal",
-		Value:   []byte{},
+	testCases := []struct {
+		typeUrl string
+	}{
+		{"/cosmos.upgrade.v1beta1.SoftwareUpgradeProposal"},
+		{"/cosmos.upgrade.v1beta1.CancelSoftwareUpgradeProposal"},
+	}
+	for _, tc := range testCases {
+		val := &gogoprotoany.Any{
+			TypeUrl: tc.typeUrl,
+			Value:   []byte{},
+		}
+		require.NoError(t, registrar.UnpackAny(val, new(v1beta1.Content)))
 	}
-	require.NoError(t, registrar.UnpackAny(val, new(v1beta1.Content)))
 }
diff --git a/x/upgrade/types/proposal.go b/x/upgrade/types/proposal.go
index 0df833c9f7..ca8f5a8820 100644
--- a/x/upgrade/types/proposal.go
+++ b/x/upgrade/types/proposal.go
@@ -19,3 +19,18 @@ func (sp *SoftwareUpgradeProposal) ProposalType() string { return v1beta1.Propos
 
 // ValidateBasic validates the content's title and description of the proposal
 func (sp *SoftwareUpgradeProposal) ValidateBasic() error { return v1beta1.ValidateAbstract(sp) }
+
+// GetTitle returns the proposal title
+func (cp *CancelSoftwareUpgradeProposal) GetTitle() string { return cp.Title }
+
+// GetDescription returns the proposal description
+func (cp *CancelSoftwareUpgradeProposal) GetDescription() string { return cp.Description }
+
+// ProposalRoute returns the proposal router key
+func (cp *CancelSoftwareUpgradeProposal) ProposalRoute() string { return types.RouterKey }
+
+// ProposalType is "Text"
+func (cp *CancelSoftwareUpgradeProposal) ProposalType() string { return v1beta1.ProposalTypeText }
+
+// ValidateBasic validates the content's title and description of the proposal
+func (cp *CancelSoftwareUpgradeProposal) ValidateBasic() error { return v1beta1.ValidateAbstract(cp) }