diff --git a/app/sprinkles/core/src/Database/Migrator/MigrationLocator.php b/app/sprinkles/core/src/Database/Migrator/MigrationLocator.php
index 58f4ce6bb..3ee918af1 100644
--- a/app/sprinkles/core/src/Database/Migrator/MigrationLocator.php
+++ b/app/sprinkles/core/src/Database/Migrator/MigrationLocator.php
@@ -54,7 +54,11 @@ public function getMigrations()
 
         $migrations = [];
         foreach ($migrationFiles as $migrationFile) {
-            $migrations[] = $this->getMigrationDetails($migrationFile);
+            // Note that PSR4 insists that all php files must end in PHP, so ignore all
+            // files that don't end in PHP.
+            if (preg_match('/php$/', $migrationFile)) {
+                $migrations[] = $this->getMigrationDetails($migrationFile);
+            }
         }
 
         return $migrations;
diff --git a/app/sprinkles/core/tests/Integration/Database/Migrator/MigrationLocatorTest.php b/app/sprinkles/core/tests/Integration/Database/Migrator/MigrationLocatorTest.php
index 44c842263..a5c0fbdcb 100644
--- a/app/sprinkles/core/tests/Integration/Database/Migrator/MigrationLocatorTest.php
+++ b/app/sprinkles/core/tests/Integration/Database/Migrator/MigrationLocatorTest.php
@@ -90,6 +90,7 @@ public function testGetMigrations()
             new Resource($resourceStream, $resourceAccountLocation, 'one/CreatePasswordResetsTable.php'),
             new Resource($resourceStream, $resourceAccountLocation, 'two/CreateFlightsTable.php'),
             new Resource($resourceStream, $resourceAccountLocation, 'CreateMainTable.php'),
+            new Resource($resourceStream, $resourceAccountLocation, 'README.md'), // This shoudn't be returned by the migrator
         ]);
 
         // Create a new MigrationLocator instance with our simulated ResourceLocation
@@ -109,7 +110,6 @@ public function testGetMigrations()
         ];
 
         // Test results match expectations
-        $this->assertCount(8, $results);
         $this->assertEquals($expected, $results);
 
         return $locator;