diff --git a/src/declarations/redeclare-allow-sloppy-function/block-attempt-to-redeclare-async-function-declaration.template b/src/declarations/redeclare-allow-sloppy-function/block-attempt-to-redeclare-async-function-declaration.template
index 4a06bf44b8..2a5c0f3e3f 100644
--- a/src/declarations/redeclare-allow-sloppy-function/block-attempt-to-redeclare-async-function-declaration.template
+++ b/src/declarations/redeclare-allow-sloppy-function/block-attempt-to-redeclare-async-function-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-functions]
+features: [async-functions]
 ---*/
 
 { async function f() {} /*{ body }*/ }
diff --git a/src/declarations/redeclare-allow-sloppy-function/block-attempt-to-redeclare-async-generator-declaration.template b/src/declarations/redeclare-allow-sloppy-function/block-attempt-to-redeclare-async-generator-declaration.template
index 5327ac0fbe..17ae293b6e 100644
--- a/src/declarations/redeclare-allow-sloppy-function/block-attempt-to-redeclare-async-generator-declaration.template
+++ b/src/declarations/redeclare-allow-sloppy-function/block-attempt-to-redeclare-async-generator-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-iteration]
+features: [async-iteration]
 ---*/
 
 { async function* f() {} /*{ body }*/ }
diff --git a/src/declarations/redeclare-allow-sloppy-function/switch-attempt-to-redeclare-async-function-declaration.template b/src/declarations/redeclare-allow-sloppy-function/switch-attempt-to-redeclare-async-function-declaration.template
index 57a185a7cc..40a2bf41ed 100644
--- a/src/declarations/redeclare-allow-sloppy-function/switch-attempt-to-redeclare-async-function-declaration.template
+++ b/src/declarations/redeclare-allow-sloppy-function/switch-attempt-to-redeclare-async-function-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-functions]
+features: [async-functions]
 ---*/
 
 switch (0) { case 1: async function f() {} default: /*{ body }*/ }
diff --git a/src/declarations/redeclare-allow-sloppy-function/switch-attempt-to-redeclare-async-generator-declaration.template b/src/declarations/redeclare-allow-sloppy-function/switch-attempt-to-redeclare-async-generator-declaration.template
index 6d67152339..326f03d478 100644
--- a/src/declarations/redeclare-allow-sloppy-function/switch-attempt-to-redeclare-async-generator-declaration.template
+++ b/src/declarations/redeclare-allow-sloppy-function/switch-attempt-to-redeclare-async-generator-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-iteration]
+features: [async-iteration]
 ---*/
 
 switch (0) { case 1: async function* f() {} default: /*{ body }*/ }
diff --git a/src/declarations/redeclare-allow-var/block-attempt-to-redeclare-async-function-declaration.template b/src/declarations/redeclare-allow-var/block-attempt-to-redeclare-async-function-declaration.template
index 2349e07a3d..28c7f582f8 100644
--- a/src/declarations/redeclare-allow-var/block-attempt-to-redeclare-async-function-declaration.template
+++ b/src/declarations/redeclare-allow-var/block-attempt-to-redeclare-async-function-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-functions]
+features: [async-functions]
 ---*/
 
 { async function f() {} /*{ body }*/ }
diff --git a/src/declarations/redeclare-allow-var/block-attempt-to-redeclare-async-generator-declaration.template b/src/declarations/redeclare-allow-var/block-attempt-to-redeclare-async-generator-declaration.template
index ed2adc2d6c..d07e3e68a8 100644
--- a/src/declarations/redeclare-allow-var/block-attempt-to-redeclare-async-generator-declaration.template
+++ b/src/declarations/redeclare-allow-var/block-attempt-to-redeclare-async-generator-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-iteration]
+features: [async-iteration]
 ---*/
 
 { async function* f() {} /*{ body }*/ }
diff --git a/src/declarations/redeclare-allow-var/switch-attempt-to-redeclare-async-function-declaration.template b/src/declarations/redeclare-allow-var/switch-attempt-to-redeclare-async-function-declaration.template
index 6317cd26f0..37f893c81f 100644
--- a/src/declarations/redeclare-allow-var/switch-attempt-to-redeclare-async-function-declaration.template
+++ b/src/declarations/redeclare-allow-var/switch-attempt-to-redeclare-async-function-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-functions]
+features: [async-functions]
 ---*/
 
 switch (0) { case 1: async function f() {} default: /*{ body }*/ }
diff --git a/src/declarations/redeclare-allow-var/switch-attempt-to-redeclare-async-generator-declaration.template b/src/declarations/redeclare-allow-var/switch-attempt-to-redeclare-async-generator-declaration.template
index 7b8c6b0b92..7c049c54de 100644
--- a/src/declarations/redeclare-allow-var/switch-attempt-to-redeclare-async-generator-declaration.template
+++ b/src/declarations/redeclare-allow-var/switch-attempt-to-redeclare-async-generator-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-iteration]
+features: [async-iteration]
 ---*/
 
 switch (0) { case 1: async function* f() {} default: /*{ body }*/ }
diff --git a/src/declarations/redeclare-with-async-function-declaration.case b/src/declarations/redeclare-with-async-function-declaration.case
index cf74b701d3..672dd06ce7 100644
--- a/src/declarations/redeclare-with-async-function-declaration.case
+++ b/src/declarations/redeclare-with-async-function-declaration.case
@@ -5,7 +5,7 @@
 desc: >
   redeclaration with AsyncFunctionDeclaration
 template: redeclare
-flags: [async-functions]
+features: [async-functions]
 ---*/
 
 //- body
diff --git a/src/declarations/redeclare-with-async-generator-declaration.case b/src/declarations/redeclare-with-async-generator-declaration.case
index 7f2638d2a1..3413db42ba 100644
--- a/src/declarations/redeclare-with-async-generator-declaration.case
+++ b/src/declarations/redeclare-with-async-generator-declaration.case
@@ -5,7 +5,7 @@
 desc: >
   redeclaration with AsyncGeneratorDeclaration
 template: redeclare
-flags: [async-iteration]
+features: [async-iteration]
 ---*/
 
 //- body
diff --git a/src/declarations/redeclare/block-attempt-to-redeclare-async-function-declaration.template b/src/declarations/redeclare/block-attempt-to-redeclare-async-function-declaration.template
index 4a06bf44b8..2a5c0f3e3f 100644
--- a/src/declarations/redeclare/block-attempt-to-redeclare-async-function-declaration.template
+++ b/src/declarations/redeclare/block-attempt-to-redeclare-async-function-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-functions]
+features: [async-functions]
 ---*/
 
 { async function f() {} /*{ body }*/ }
diff --git a/src/declarations/redeclare/block-attempt-to-redeclare-async-generator-declaration.template b/src/declarations/redeclare/block-attempt-to-redeclare-async-generator-declaration.template
index 5327ac0fbe..17ae293b6e 100644
--- a/src/declarations/redeclare/block-attempt-to-redeclare-async-generator-declaration.template
+++ b/src/declarations/redeclare/block-attempt-to-redeclare-async-generator-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-iteration]
+features: [async-iteration]
 ---*/
 
 { async function* f() {} /*{ body }*/ }
diff --git a/src/declarations/redeclare/switch-attempt-to-redeclare-async-function-declaration.template b/src/declarations/redeclare/switch-attempt-to-redeclare-async-function-declaration.template
index 57a185a7cc..40a2bf41ed 100644
--- a/src/declarations/redeclare/switch-attempt-to-redeclare-async-function-declaration.template
+++ b/src/declarations/redeclare/switch-attempt-to-redeclare-async-function-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-functions]
+features: [async-functions]
 ---*/
 
 switch (0) { case 1: async function f() {} default: /*{ body }*/ }
diff --git a/src/declarations/redeclare/switch-attempt-to-redeclare-async-generator-declaration.template b/src/declarations/redeclare/switch-attempt-to-redeclare-async-generator-declaration.template
index 6d67152339..326f03d478 100644
--- a/src/declarations/redeclare/switch-attempt-to-redeclare-async-generator-declaration.template
+++ b/src/declarations/redeclare/switch-attempt-to-redeclare-async-generator-declaration.template
@@ -13,7 +13,7 @@ info: |
 negative:
   phase: early
   type: SyntaxError
-flags: [async-iteration]
+features: [async-iteration]
 ---*/
 
 switch (0) { case 1: async function* f() {} default: /*{ body }*/ }