diff --git a/test_decorator_a/test_decorator_a.info.yml b/test_decorator_a/test_decorator_a.info.yml
index 9e62aef..bbf96d4 100644
--- a/test_decorator_a/test_decorator_a.info.yml
+++ b/test_decorator_a/test_decorator_a.info.yml
@@ -3,5 +3,6 @@ type: module
 description: 'Single Decorator.'
 package: Development
 core: 8.x
+core_version_requirement: ^8 || ^9
 dependencies:
   - test_decorator_core
diff --git a/test_decorator_chain/test_decorator_chain.info.yml b/test_decorator_chain/test_decorator_chain.info.yml
index 2a53586..0e433f5 100644
--- a/test_decorator_chain/test_decorator_chain.info.yml
+++ b/test_decorator_chain/test_decorator_chain.info.yml
@@ -3,5 +3,6 @@ type: module
 description: 'A decorator that chains onto another.'
 package: Development
 core: 8.x
+core_version_requirement: ^8 || ^9
 dependencies:
   - test_decorator_core
diff --git a/test_decorator_core/test_decorator_core.info.yml b/test_decorator_core/test_decorator_core.info.yml
index 9a7513d..5c4904d 100644
--- a/test_decorator_core/test_decorator_core.info.yml
+++ b/test_decorator_core/test_decorator_core.info.yml
@@ -3,3 +3,4 @@ type: module
 description: 'Test how service decorators work. Core service.'
 package: Development
 core: 8.x
+core_version_requirement: ^8 || ^9
\ No newline at end of file
diff --git a/test_decorator_higher/test_decorator_higher.info.yml b/test_decorator_higher/test_decorator_higher.info.yml
index f17de84..9a1cdca 100644
--- a/test_decorator_higher/test_decorator_higher.info.yml
+++ b/test_decorator_higher/test_decorator_higher.info.yml
@@ -3,5 +3,6 @@ type: module
 description: 'Decorator with higher priority.'
 package: Development
 core: 8.x
+core_version_requirement: ^8 || ^9
 dependencies:
   - test_decorator_core
diff --git a/test_decorator_inter/test_decorator_inter.info.yml b/test_decorator_inter/test_decorator_inter.info.yml
index ec879cc..51b8c38 100644
--- a/test_decorator_inter/test_decorator_inter.info.yml
+++ b/test_decorator_inter/test_decorator_inter.info.yml
@@ -3,5 +3,6 @@ type: module
 description: 'Test decorator with object interface instead of extend.'
 package: Development
 core: 8.x
+core_version_requirement: ^8 || ^9
 dependencies:
   - test_decorator_core
diff --git a/test_decorator_lower/test_decorator_lower.info.yml b/test_decorator_lower/test_decorator_lower.info.yml
index c002416..98bad1a 100644
--- a/test_decorator_lower/test_decorator_lower.info.yml
+++ b/test_decorator_lower/test_decorator_lower.info.yml
@@ -3,5 +3,6 @@ type: module
 description: 'Test decorator with lower priority.'
 package: Development
 core: 8.x
+core_version_requirement: ^8 || ^9
 dependencies:
   - test_decorator_core
diff --git a/test_decorator_protect/test_decorator_protect.info.yml b/test_decorator_protect/test_decorator_protect.info.yml
index bf28d92..a96c126 100644
--- a/test_decorator_protect/test_decorator_protect.info.yml
+++ b/test_decorator_protect/test_decorator_protect.info.yml
@@ -3,5 +3,6 @@ type: module
 description: 'Override protected method via decorator.'
 package: Development
 core: 8.x
+core_version_requirement: ^8 || ^9
 dependencies:
   - test_decorator_core