diff -Nur a/ext/sqlite3/database.c b/ext/sqlite3/database.c
--- a/ext/sqlite3/database.c	2022-01-27 14:30:56.122375149 +0800
+++ b/ext/sqlite3/database.c	2022-01-27 14:30:45.214194939 +0800
@@ -57,7 +57,9 @@
   rb_scan_args(argc, argv, "12", &file, &opts, &zvfs);
 #if defined StringValueCStr
   StringValuePtr(file);
+#if defined TAINTING_SUPPORT
   rb_check_safe_obj(file);
+#endif
 #else
   Check_SafeStr(file);
 #endif
@@ -307,7 +309,7 @@
       return rb_float_new(sqlite3_value_double(val));
       break;
     case SQLITE_TEXT:
-      return rb_tainted_str_new2((const char *)sqlite3_value_text(val));
+      return rb_str_new2((const char *)sqlite3_value_text(val));
       break;
     case SQLITE_BLOB: {
       /* Sqlite warns calling sqlite3_value_bytes may invalidate pointer from sqlite3_value_blob,
@@ -317,7 +319,7 @@
        */
       int len = sqlite3_value_bytes(val);
 #ifdef HAVE_RUBY_ENCODING_H
-      return rb_tainted_str_new((const char *)sqlite3_value_blob(val), len);
+      return rb_str_new((const char *)sqlite3_value_blob(val), len);
 #else
       /* When encoding is not available, make it class SQLite3::Blob. */
       VALUE strargv[1];
diff -Nur a/ext/sqlite3/extconf.rb b/ext/sqlite3/extconf.rb
--- a/ext/sqlite3/extconf.rb	2022-01-27 14:30:56.122375149 +0800
+++ b/ext/sqlite3/extconf.rb	2022-01-27 14:29:34.125020499 +0800
@@ -33,6 +33,10 @@
   $CFLAGS << ' -W3'
 end
 
+if RUBY_VERSION < '2.7'
+  $CFLAGS << ' -DTAINTING_SUPPORT'
+end
+
 def asplode missing
   if RUBY_PLATFORM =~ /mingw|mswin/
     abort "#{missing} is missing. Install SQLite3 from " +
diff -Nur a/ext/sqlite3/statement.c b/ext/sqlite3/statement.c
--- a/ext/sqlite3/statement.c	2022-01-27 14:30:56.126375215 +0800
+++ b/ext/sqlite3/statement.c	2022-01-27 14:29:34.125020499 +0800
@@ -148,7 +148,7 @@
               break;
             case SQLITE_TEXT:
               {
-                VALUE str = rb_tainted_str_new(
+                VALUE str = rb_str_new(
                     (const char *)sqlite3_column_text(stmt, i),
                     (long)sqlite3_column_bytes(stmt, i)
                 );
@@ -162,7 +162,7 @@
               break;
             case SQLITE_BLOB:
               {
-                VALUE str = rb_tainted_str_new(
+                VALUE str = rb_str_new(
                     (const char *)sqlite3_column_blob(stmt, i),
                     (long)sqlite3_column_bytes(stmt, i)
                 );
diff -Nur a/test/test_integration_resultset.rb b/test/test_integration_resultset.rb
--- a/test/test_integration_resultset.rb	2022-01-27 14:30:56.134375348 +0800
+++ b/test/test_integration_resultset.rb	2022-01-27 14:29:34.125020499 +0800
@@ -105,23 +105,6 @@
     assert_equal hash[1], "foo"
   end
 
-  def test_tainted_results_as_hash
-    @db.results_as_hash = true
-    @result.reset( 1 )
-    row = @result.next
-    row.each do |_, v|
-      assert(v.tainted?) if String === v
-    end
-  end
-
-  def test_tainted_row_values
-    @result.reset( 1 )
-    row = @result.next
-    row.each do |v|
-      assert(v.tainted?) if String === v
-    end
-  end
-
   def test_each
     called = 0
     @result.reset( 1, 2 )
diff -Nur a/test/test_statement.rb b/test/test_statement.rb
--- a/test/test_statement.rb	2022-01-27 14:30:56.138375414 +0800
+++ b/test/test_statement.rb	2022-01-27 14:29:34.125020499 +0800
@@ -190,11 +190,6 @@
       assert_equal ['foo'], r
     end
 
-    def test_tainted
-      r = @stmt.step
-      assert r.first.tainted?
-    end
-
     def test_step_twice
       assert_not_nil @stmt.step
       assert !@stmt.done?