diff --git a/internal/api/rust/rust.go b/internal/api/rust/rust.go
index 8c235c4..6c6bf98 100644
--- a/internal/api/rust/rust.go
+++ b/internal/api/rust/rust.go
@@ -42,7 +42,7 @@ func SetupLogs(prefix string) {
 var zero uint32
 
 const (
-	OptionEnableCrossProcessRefreshLockProcessName = "EnableCrossProcessRefreshLockProcessName"
+	CrossProcessStoreLocksHolderName = "CrossProcessStoreLocksHolderName"
 )
 
 // magic value for EnableCrossProcessRefreshLockProcessName which configures the FFI client
@@ -76,16 +76,16 @@ func NewRustClient(t ct.TestLike, opts api.ClientCreationOpts) (api.Client, erro
 	t.Logf("NewRustClient[%s][%s] creating...", opts.UserID, opts.DeviceID)
 	matrix_sdk_ffi.LogEvent("rust.go", &zero, matrix_sdk_ffi.LogLevelInfo, t.Name(), fmt.Sprintf("NewRustClient[%s][%s] creating...", opts.UserID, opts.DeviceID))
 	slidingSyncVersion := matrix_sdk_ffi.SlidingSyncVersionBuilderNative{}
+	clientSessionDelegate := NewMemoryClientSessionDelegate()
 	ab := matrix_sdk_ffi.NewClientBuilder().
 		HomeserverUrl(opts.BaseURL).
 		SlidingSyncVersionBuilder(slidingSyncVersion).
-		AutoEnableCrossSigning(true)
-	var clientSessionDelegate matrix_sdk_ffi.ClientSessionDelegate
-	xprocessName := opts.GetExtraOption(OptionEnableCrossProcessRefreshLockProcessName, "").(string)
+		AutoEnableCrossSigning(true).
+		SetSessionDelegate(clientSessionDelegate)
+	xprocessName := opts.GetExtraOption(CrossProcessStoreLocksHolderName, "").(string)
 	if xprocessName != "" {
-		t.Logf("enabling cross process refresh lock with proc name=%s", xprocessName)
-		clientSessionDelegate = NewMemoryClientSessionDelegate()
-		ab = ab.EnableCrossProcessRefreshLock(xprocessName, clientSessionDelegate)
+		t.Logf("setting cross process store locks holder name=%s", xprocessName)
+		ab = ab.CrossProcessStoreLocksHolderName(xprocessName)
 	}
 	// @alice:hs1, FOOBAR => alice_hs1_FOOBAR
 	username := strings.Replace(opts.UserID[1:], ":", "_", -1) + "_" + opts.DeviceID
@@ -345,9 +345,9 @@ func (c *RustClient) StartSyncing(t ct.TestLike) (stopSyncing func(), err error)
 	//  > thread '<unnamed>' panicked at 'there is no reactor running, must be called from the context of a Tokio 1.x runtime'
 	// where the stack trace doesn't hit any test code, but does start at a `free_` function.
 	sb := c.FFIClient.SyncService()
-	xprocessName := c.opts.GetExtraOption(OptionEnableCrossProcessRefreshLockProcessName, "").(string)
+	xprocessName := c.opts.GetExtraOption(CrossProcessStoreLocksHolderName, "").(string)
 	if xprocessName != "" {
-		sb2 := sb.WithCrossProcessLock(&xprocessName)
+		sb2 := sb.WithCrossProcessLock()
 		sb.Destroy()
 		sb = sb2
 	}
diff --git a/tests/rust/notification_test.go b/tests/rust/notification_test.go
index 57dc33c..33856f5 100644
--- a/tests/rust/notification_test.go
+++ b/tests/rust/notification_test.go
@@ -63,7 +63,7 @@ func testNSEReceive(t *testing.T, numMsgsBefore, numMsgsAfter int) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+				rust.CrossProcessStoreLocksHolderName: "main",
 			},
 		},
 	})
@@ -88,7 +88,7 @@ func testNSEReceive(t *testing.T, numMsgsBefore, numMsgsAfter int) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: rust.ProcessNameNSE,
+				rust.CrossProcessStoreLocksHolderName: rust.ProcessNameNSE,
 			},
 			AccessToken: accessToken,
 		},
@@ -110,7 +110,7 @@ func TestNSEReceiveForNonPreKeyMessage(t *testing.T) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+				rust.CrossProcessStoreLocksHolderName: "main",
 			},
 		},
 	})
@@ -137,7 +137,7 @@ func TestNSEReceiveForNonPreKeyMessage(t *testing.T) {
 			Opts: api.ClientCreationOpts{
 				PersistentStorage: true,
 				ExtraOpts: map[string]any{
-					rust.OptionEnableCrossProcessRefreshLockProcessName: rust.ProcessNameNSE,
+					rust.CrossProcessStoreLocksHolderName: rust.ProcessNameNSE,
 				},
 				AccessToken: accessToken,
 			},
@@ -164,7 +164,7 @@ func TestMultiprocessNSE(t *testing.T) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+				rust.CrossProcessStoreLocksHolderName: "main",
 			},
 		},
 	})
@@ -201,7 +201,7 @@ func TestMultiprocessNSE(t *testing.T) {
 				Opts: api.ClientCreationOpts{
 					PersistentStorage: true,
 					ExtraOpts: map[string]any{
-						rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+						rust.CrossProcessStoreLocksHolderName: "main",
 					},
 					AccessToken: accessToken,
 				},
@@ -222,7 +222,7 @@ func TestMultiprocessNSE(t *testing.T) {
 				PersistentStorage: true,
 				AccessToken:       accessToken,
 				ExtraOpts: map[string]any{
-					rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+					rust.CrossProcessStoreLocksHolderName: "main",
 				},
 			},
 		}) // this should login already as we provided an access token
@@ -261,7 +261,7 @@ func TestMultiprocessNSE(t *testing.T) {
 					Opts: api.ClientCreationOpts{
 						PersistentStorage: true,
 						ExtraOpts: map[string]any{
-							rust.OptionEnableCrossProcessRefreshLockProcessName: rust.ProcessNameNSE,
+							rust.CrossProcessStoreLocksHolderName: rust.ProcessNameNSE,
 						},
 						AccessToken: accessToken,
 					},
@@ -300,7 +300,7 @@ func TestMultiprocessNSE(t *testing.T) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+				rust.CrossProcessStoreLocksHolderName: "main",
 			},
 		},
 	})
@@ -324,7 +324,7 @@ func TestMultiprocessNSEBackupKeyMacError(t *testing.T) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+				rust.CrossProcessStoreLocksHolderName: "main",
 			},
 		},
 	})
@@ -358,7 +358,7 @@ func TestMultiprocessNSEBackupKeyMacError(t *testing.T) {
 					PersistentStorage: true,
 					AccessToken:       accessToken,
 					ExtraOpts: map[string]any{
-						rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+						rust.CrossProcessStoreLocksHolderName: "main",
 					},
 				},
 			}) // this should login already as we provided an access token
@@ -377,7 +377,7 @@ func TestMultiprocessNSEBackupKeyMacError(t *testing.T) {
 			Opts: api.ClientCreationOpts{
 				PersistentStorage: true,
 				ExtraOpts: map[string]any{
-					rust.OptionEnableCrossProcessRefreshLockProcessName: rust.ProcessNameNSE,
+					rust.CrossProcessStoreLocksHolderName: rust.ProcessNameNSE,
 				},
 				AccessToken: accessToken,
 			},
@@ -419,7 +419,7 @@ func TestMultiprocessNSEBackupKeyMacError(t *testing.T) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+				rust.CrossProcessStoreLocksHolderName: "main",
 			},
 		},
 	})
@@ -443,7 +443,7 @@ func TestMultiprocessNSEOlmSessionWedge(t *testing.T) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+				rust.CrossProcessStoreLocksHolderName: "main",
 			},
 		},
 	})
@@ -478,7 +478,7 @@ func TestMultiprocessNSEOlmSessionWedge(t *testing.T) {
 				Opts: api.ClientCreationOpts{
 					PersistentStorage: true,
 					ExtraOpts: map[string]any{
-						rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+						rust.CrossProcessStoreLocksHolderName: "main",
 					},
 					AccessToken: accessToken,
 				},
@@ -503,7 +503,7 @@ func TestMultiprocessNSEOlmSessionWedge(t *testing.T) {
 				PersistentStorage: true,
 				AccessToken:       accessToken,
 				ExtraOpts: map[string]any{
-					rust.OptionEnableCrossProcessRefreshLockProcessName: rust.ProcessNameNSE,
+					rust.CrossProcessStoreLocksHolderName: rust.ProcessNameNSE,
 				},
 			},
 		}) // this should login already as we provided an access token
@@ -639,7 +639,7 @@ func TestMultiprocessInitialE2EESyncDoesntDropDeviceListUpdates(t *testing.T) {
 		Opts: api.ClientCreationOpts{
 			PersistentStorage: true,
 			ExtraOpts: map[string]any{
-				rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+				rust.CrossProcessStoreLocksHolderName: "main",
 			},
 		},
 	})
@@ -673,7 +673,7 @@ func TestMultiprocessInitialE2EESyncDoesntDropDeviceListUpdates(t *testing.T) {
 				Opts: api.ClientCreationOpts{
 					PersistentStorage: true,
 					ExtraOpts: map[string]any{
-						rust.OptionEnableCrossProcessRefreshLockProcessName: "main",
+						rust.CrossProcessStoreLocksHolderName: "main",
 					},
 					AccessToken: accessToken,
 				},
@@ -687,7 +687,7 @@ func TestMultiprocessInitialE2EESyncDoesntDropDeviceListUpdates(t *testing.T) {
 				PersistentStorage: true,
 				AccessToken:       accessToken,
 				ExtraOpts: map[string]any{
-					rust.OptionEnableCrossProcessRefreshLockProcessName: rust.ProcessNameNSE,
+					rust.CrossProcessStoreLocksHolderName: rust.ProcessNameNSE,
 				},
 			},
 		}) // this should login already as we provided an access token