diff --git a/changes/issue-mariadb-migration b/changes/issue-mariadb-migration
new file mode 100644
index 0000000000..9be496bd6d
--- /dev/null
+++ b/changes/issue-mariadb-migration
@@ -0,0 +1 @@
+* Fix v4.7.0 migration issue with policy membership history on MariaDB.
diff --git a/server/datastore/mysql/migrations/tables/20211202092042_RemovePolicyHistory.go b/server/datastore/mysql/migrations/tables/20211202092042_RemovePolicyHistory.go
index dfbf59eb5d..b1288cfa88 100644
--- a/server/datastore/mysql/migrations/tables/20211202092042_RemovePolicyHistory.go
+++ b/server/datastore/mysql/migrations/tables/20211202092042_RemovePolicyHistory.go
@@ -2,6 +2,7 @@ package tables
 
 import (
 	"database/sql"
+	"fmt"
 
 	"github.com/pkg/errors"
 )
@@ -16,6 +17,21 @@ func Up_20211202092042(tx *sql.Tx) error {
 		return errors.Wrap(err, "drop view policy_membership")
 	}
 
+	table := "policy_membership_history"
+	referencedTables := map[string]struct{}{
+		"policies": {},
+		"hosts":    {},
+	}
+	constraints, err := constraintsForTable(tx, table, referencedTables)
+	if err != nil {
+		return errors.Wrap(err, "getting references to policies and hosts table")
+	}
+	for _, ct := range constraints {
+		if _, err := tx.Exec(fmt.Sprintf(`ALTER TABLE policy_membership_history DROP FOREIGN KEY %s;`, ct)); err != nil {
+			return errors.Wrapf(err, "dropping policy_membership_history foreign keys: %s", ct)
+		}
+	}
+
 	policyMembershipTable := `
 		CREATE TABLE IF NOT EXISTS policy_membership (
 			policy_id INT UNSIGNED NOT NULL,