diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9774875..6ce00a4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,8 @@
-# v8.1.0 (2024-04-16)
+# v8.1.0 (Not released yet)
 
 Added
 - Request and Transaction tagging support (#206)
+- Support for `INSERT OR IGNORE` (#207)
 
 # v8.0.0 (2024-04-11)
 
diff --git a/compose.yaml b/compose.yaml
index ff5a760..242d8d7 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -8,4 +8,4 @@ services:
     depends_on:
       - emulator
   emulator:
-    image: gcr.io/cloud-spanner-emulator/emulator
+    image: "gcr.io/cloud-spanner-emulator/emulator:1.5.17"
diff --git a/src/Query/Grammar.php b/src/Query/Grammar.php
index ee59be0..10aef95 100644
--- a/src/Query/Grammar.php
+++ b/src/Query/Grammar.php
@@ -30,6 +30,14 @@ class Grammar extends BaseGrammar
     use MarksAsNotSupported;
     use SharedGrammarCalls;
 
+    /**
+     * @inheritDoc
+     */
+    public function compileInsertOrIgnore(Builder $query, array $values)
+    {
+        return Str::replaceFirst('insert', 'insert or ignore', $this->compileInsert($query, $values));
+    }
+
     /**
      * @inheritDoc
      */
diff --git a/tests/Query/BuilderTest.php b/tests/Query/BuilderTest.php
index b9264e0..b6f18d0 100644
--- a/tests/Query/BuilderTest.php
+++ b/tests/Query/BuilderTest.php
@@ -25,6 +25,7 @@
 use Google\Cloud\Core\Exception\ConflictException;
 use Google\Cloud\Spanner\Bytes;
 use Google\Cloud\Spanner\Duration;
+use Illuminate\Database\Events\QueryExecuted;
 use Illuminate\Database\QueryException;
 use Illuminate\Support\Carbon;
 use LogicException;
@@ -496,7 +497,7 @@ public function test_ignoreIndex(): void
             ->toSql();
     }
 
-    public function testInterleaveTable(): void
+    public function test_interleaved_table(): void
     {
         $conn = $this->getDefaultConnection();
 
@@ -558,7 +559,7 @@ public function test_insert_numeric_types(): void
         $this->assertNull($insertedRow['nullableNumericTest']);
     }
 
-    public function testInsertDatetime(): void
+    public function test_insert_datetime_object(): void
     {
         date_default_timezone_set('Asia/Tokyo');
 
@@ -577,6 +578,34 @@ public function testInsertDatetime(): void
         $this->assertSame($carbonMax->getTimestamp(), $insertedTimestamp->getTimestamp());
     }
 
+    public function test_insertOrIgnore(): void
+    {
+        $table = __FUNCTION__;
+        $conn = $this->getDefaultConnection();
+        $sb = $conn->getSchemaBuilder();
+
+        $sb->create($table, function (Blueprint $table) {
+            $table->integer('id')->nullable()->primary();
+            $table->string('s', 1)->nullable();
+        });
+
+        $query = $conn->table($table);
+        $query->truncate();
+        $this->assertSame(1, $query->insertOrIgnore(['id' => 1, 's' => 'a']));
+        $this->assertSame(2, $query->insertOrIgnore([
+            ['id' => 1, 's' => 'b'],
+            ['id' => 2, 's' => 'c'],
+            ['id' => 3, 's' => 'd'],
+        ]));
+
+        $this->assertSame([
+            ['id' => 1, 's' => 'a'],
+            ['id' => 2, 's' => 'c'],
+            ['id' => 3, 's' => 'd'],
+        ], $query->get()->sortBy('id')->values()->all());
+
+    }
+
     public function test_upsert_single_row(): void
     {
         $table = __FUNCTION__;
@@ -649,7 +678,7 @@ public function test_upsert_throw_error(): void
         $this->assertSame(0, $query->count());
     }
 
-    public function testWhereDatetime(): void
+    public function test_where_with_datetime(): void
     {
         date_default_timezone_set('Asia/Tokyo');
 
@@ -670,7 +699,7 @@ public function testWhereDatetime(): void
     /**
      * null ではない列を null で上書きできるか
      */
-    public function testUpdateWithNull(): void
+    public function test_update_with_null(): void
     {
         $conn = $this->getDefaultConnection();
         $tableName = self::TABLE_NAME_TEST;
@@ -696,10 +725,10 @@ public function testUpdateWithNull(): void
             ->where('testId', $insertRow['testId'])
             ->first();
 
-        $this->assertSame(null, $afterRow['nullableStringTest']);
+        $this->assertNull($afterRow['nullableStringTest']);
     }
 
-    public function testUpdateOrInsert(): void
+    public function test_updateOrInsert(): void
     {
         $conn = $this->getDefaultConnection();
         $tableName = self::TABLE_NAME_TEST;
@@ -724,7 +753,7 @@ public function testUpdateOrInsert(): void
         $this->assertSame('updated', $record['stringTest']);
     }
 
-    public function testDeleteOnCascase(): void
+    public function test_delete_with_cascading_interleaves(): void
     {
         $conn = $this->getDefaultConnection();
 
@@ -767,7 +796,7 @@ public function testDeleteOnCascase(): void
         $this->assertDatabaseMissing($tableName, $userItems[1]);
     }
 
-    public function testInsertBytes(): void
+    public function test_insert_bytes(): void
     {
         $conn = $this->getDefaultConnection();
         $tableName = self::TABLE_NAME_TEST;
@@ -784,7 +813,7 @@ public function testInsertBytes(): void
         $this->assertSame($bytes->formatAsString(), $insertedBytes->formatAsString());
     }
 
-    public function testWhereBytes(): void
+    public function test_Where_with_bytes(): void
     {
         $conn = $this->getDefaultConnection();
         $tableName = self::TABLE_NAME_TEST;
@@ -799,7 +828,7 @@ public function testWhereBytes(): void
         $this->assertSame(0, $qb->where('bytesTest', '=', new Bytes("\x00\x01"))->count());
     }
 
-    public function testWhereIn(): void
+    public function test_whereIn(): void
     {
         $conn = $this->getDefaultConnection();
         $tableName = self::TABLE_NAME_TEST;
@@ -895,7 +924,7 @@ public function test_whereLike(): void
         }
     }
 
-    public function testEscapeCharacter(): void
+    public function test_escapeCharacter(): void
     {
         $conn = $this->getDefaultConnection();
         $tableName = self::TABLE_NAME_USER;
@@ -920,7 +949,7 @@ public function testEscapeCharacter(): void
         }
     }
 
-    public function testStaleReads(): void
+    public function test_stale_reads(): void
     {
         $conn = $this->getDefaultConnection();
         $tableName = self::TABLE_NAME_USER;
@@ -935,7 +964,7 @@ public function testStaleReads(): void
         $this->assertEmpty($stalenessRow);
     }
 
-    public function testTruncate(): void
+    public function test_truncate(): void
     {
         $conn = $this->getDefaultConnection();
         $tableName = self::TABLE_NAME_USER;