diff --git a/e2e_tests/helpers.go b/e2e_tests/helpers.go
index 898093dc..dc35447e 100644
--- a/e2e_tests/helpers.go
+++ b/e2e_tests/helpers.go
@@ -4,6 +4,8 @@ import (
 	"testing"
 
 	"github.com/aviator-co/av/internal/git"
+	"github.com/aviator-co/av/internal/meta"
+	"github.com/aviator-co/av/internal/meta/jsonfiledb"
 	"github.com/stretchr/testify/require"
 )
 
@@ -12,3 +14,11 @@ func RequireCurrentBranchName(t *testing.T, repo *git.Repo, name string) {
 	require.NoError(t, err, "failed to determine current branch name")
 	require.Equal(t, name, currentBranch, "expected current branch to be %q, got %q", name, currentBranch)
 }
+
+func GetStoredParentBranchState(t *testing.T, repo *git.Repo, name string) meta.BranchState {
+	// We shouldn't do this as part of an E2E test, but it's hard to ensure otherwise.
+	db, err := jsonfiledb.OpenRepo(repo)
+	require.NoError(t, err, "failed to open repo db")
+	br, _ := db.ReadTx().Branch(name)
+	return br.Parent
+}
diff --git a/e2e_tests/stack_sync_test.go b/e2e_tests/stack_sync_test.go
index cf55896c..a22f4761 100644
--- a/e2e_tests/stack_sync_test.go
+++ b/e2e_tests/stack_sync_test.go
@@ -9,6 +9,7 @@ import (
 
 	"github.com/aviator-co/av/internal/git"
 	"github.com/aviator-co/av/internal/git/gittest"
+	"github.com/aviator-co/av/internal/meta"
 	"github.com/stretchr/testify/require"
 )
 
@@ -126,6 +127,25 @@ func TestStackSync(t *testing.T) {
 	})
 	require.NoError(t, err)
 	require.Equal(t, 4, len(revs))
+
+	stack1Commit, err := repo.RevParse(&git.RevParse{Rev: "stack-1"})
+	require.NoError(t, err)
+
+	stack2Commit, err := repo.RevParse(&git.RevParse{Rev: "stack-2"})
+	require.NoError(t, err)
+
+	require.Equal(t, meta.BranchState{
+		Name:  "main",
+		Trunk: true,
+	}, GetStoredParentBranchState(t, repo, "stack-1"))
+	require.Equal(t, meta.BranchState{
+		Name: "stack-1",
+		Head: stack1Commit,
+	}, GetStoredParentBranchState(t, repo, "stack-2"))
+	require.Equal(t, meta.BranchState{
+		Name: "stack-2",
+		Head: stack2Commit,
+	}, GetStoredParentBranchState(t, repo, "stack-3"))
 }
 
 func TestStackSyncAbort(t *testing.T) {
diff --git a/internal/actions/sync_branch.go b/internal/actions/sync_branch.go
index b55443be..90ba3932 100644
--- a/internal/actions/sync_branch.go
+++ b/internal/actions/sync_branch.go
@@ -359,6 +359,10 @@ func syncBranchRebase(
 	}
 	msgRebaseResult(rebase)
 
+	branch.Parent = parentState
+	branch.Parent.Head = parentHead
+	tx.SetBranch(branch)
+
 	//nolint:exhaustive
 	switch rebase.Status {
 	case git.RebaseConflict: