diff --git a/src/Extension/CoreExtension.php b/src/Extension/CoreExtension.php
index c1da0af88..83ef85730 100644
--- a/src/Extension/CoreExtension.php
+++ b/src/Extension/CoreExtension.php
@@ -302,11 +302,12 @@ final class CoreExtension extends AbstractExtension
     {
         return [
             [
-                'not' => ['precedence' => 50, 'precedence_change' => new OperatorPrecedenceChange('twig/twig', '3.15', 70), 'class' => NotUnary::class],
+                'not' => ['precedence' => 70, 'class' => NotUnary::class],
                 '-' => ['precedence' => 500, 'class' => NegUnary::class],
                 '+' => ['precedence' => 500, 'class' => PosUnary::class],
             ],
             [
+                '??' => ['precedence' => 5, 'class' => NullCoalesceExpression::class, 'associativity' => ExpressionParser::OPERATOR_RIGHT],
                 'or' => ['precedence' => 10, 'class' => OrBinary::class, 'associativity' => ExpressionParser::OPERATOR_LEFT],
                 'xor' => ['precedence' => 12, 'class' => XorBinary::class, 'associativity' => ExpressionParser::OPERATOR_LEFT],
                 'and' => ['precedence' => 15, 'class' => AndBinary::class, 'associativity' => ExpressionParser::OPERATOR_LEFT],
@@ -338,7 +339,6 @@ final class CoreExtension extends AbstractExtension
                 'is' => ['precedence' => 100, 'associativity' => ExpressionParser::OPERATOR_LEFT],
                 'is not' => ['precedence' => 100, 'associativity' => ExpressionParser::OPERATOR_LEFT],
                 '**' => ['precedence' => 200, 'class' => PowerBinary::class, 'associativity' => ExpressionParser::OPERATOR_RIGHT],
-                '??' => ['precedence' => 300, 'precedence_change' => new OperatorPrecedenceChange('twig/twig', '3.15', 5), 'class' => NullCoalesceExpression::class, 'associativity' => ExpressionParser::OPERATOR_RIGHT],
             ],
         ];
     }
diff --git a/tests/Fixtures/operators/not_precedence.legacy.test b/tests/Fixtures/operators/not_precedence.legacy.test
deleted file mode 100644
index 5178288e9..000000000
--- a/tests/Fixtures/operators/not_precedence.legacy.test
+++ /dev/null
@@ -1,9 +0,0 @@
---TEST--
-*, /, //, and % will have a higher precedence over not in Twig 4.0
---DEPRECATION--
-Since twig/twig 3.15: Add explicit parentheses around the "not" unary operator to avoid behavior change in the next major version as its precedence will change in "index.twig" at line 2.
---TEMPLATE--
-{{ not 1 * 2 }}
---DATA--
-return []
---EXPECT--
diff --git a/tests/Fixtures/operators/not_precedence.test b/tests/Fixtures/operators/not_precedence.test
index 592b1c334..cca545f17 100644
--- a/tests/Fixtures/operators/not_precedence.test
+++ b/tests/Fixtures/operators/not_precedence.test
@@ -2,8 +2,9 @@
 *, /, //, and % will have a higher precedence over not in Twig 4.0
 --TEMPLATE--
 {{ (not 1) * 2 }}
-{{ (not 1 * 2) }}
+{{ not 1 * 2 }}
 --DATA--
 return []
 --EXPECT--
 0
+0
diff --git a/tests/Fixtures/tests/null_coalesce.legacy.test b/tests/Fixtures/tests/null_coalesce.legacy.test
deleted file mode 100644
index 3d33d0a79..000000000
--- a/tests/Fixtures/tests/null_coalesce.legacy.test
+++ /dev/null
@@ -1,16 +0,0 @@
---TEST--
-Twig supports the ?? operator
---DEPRECATION--
-Since twig/twig 3.15: Add explicit parentheses around the "??" binary operator to avoid behavior change in the next major version as its precedence will change in "index.twig" at line 4.
-Since twig/twig 3.15: Add explicit parentheses around the "??" binary operator to avoid behavior change in the next major version as its precedence will change in "index.twig" at line 5.
---TEMPLATE--
-{{ nope ?? nada ?? 'OK' -}} {# no deprecation as the operators have the same precedence #}
-
-{{ 1 + nope ?? nada ?? 2 }}
-{{ 1 + nope ?? 3 + nada ?? 2 }}
---DATA--
-return []
---EXPECT--
-OK
-3
-6
diff --git a/tests/Fixtures/tests/null_coalesce.test b/tests/Fixtures/tests/null_coalesce.test
index f80b90717..5c034e260 100644
--- a/tests/Fixtures/tests/null_coalesce.test
+++ b/tests/Fixtures/tests/null_coalesce.test
@@ -13,6 +13,7 @@ Twig supports the ?? operator
 {{ nope ?? (nada ?? 'OK') }}
 {{ 1 + (nope ?? (nada ?? 2)) }}
 {{ 1 + (nope ?? 3) + (nada ?? 2) }}
+{{ nope ?? nada ?? 2 }}
 --DATA--
 return ['bar' => 'OK', 'foo' => ['bar' => 'OK']]
 --EXPECT--
@@ -28,3 +29,4 @@ OK
 OK
 3
 6
+2
\ No newline at end of file