diff --git a/placement/tests/functional/gabbits/allocations-1-12.yaml b/placement/tests/functional/gabbits/allocations-1-12.yaml
index 0b951347a..f29ab4725 100644
--- a/placement/tests/functional/gabbits/allocations-1-12.yaml
+++ b/placement/tests/functional/gabbits/allocations-1-12.yaml
@@ -63,7 +63,8 @@ tests:
   status: 400
   response_strings:
       - JSON does not validate
-      - does not have enough properties
+      #    jsonschema < 4.23.0               jsonschema >= 4.23.0
+      - "/(does not have enough properties)|(should be non-empty)/"
 
 - name: put unused field
   PUT: /allocations/a0b15655-273a-4b3d-9792-2e579b7d5ad9
diff --git a/placement/tests/functional/gabbits/allocations-bug-1714072.yaml b/placement/tests/functional/gabbits/allocations-bug-1714072.yaml
index fa25935b6..dcb0b4b30 100644
--- a/placement/tests/functional/gabbits/allocations-bug-1714072.yaml
+++ b/placement/tests/functional/gabbits/allocations-bug-1714072.yaml
@@ -62,7 +62,8 @@ tests:
       user_id: 66cb2f29-c86d-47c3-8af5-69ae7b778c70
   status: 400
   response_strings:
-      - does not have enough properties
+      #    jsonschema < 4.23.0               jsonschema >= 4.23.0
+      - "/(does not have enough properties)|(should be non-empty)/"
 
 # The next two tests confirm that the bug identified by
 # this file's name is not present in the PUT /allocations/{consumer_uuid}
@@ -94,4 +95,5 @@ tests:
       user_id: 66cb2f29-c86d-47c3-8af5-69ae7b778c70
   status: 400
   response_strings:
-      - does not have enough properties
+      #    jsonschema < 4.23.0               jsonschema >= 4.23.0
+      - "/(does not have enough properties)|(should be non-empty)/"
diff --git a/placement/tests/functional/gabbits/allocations-mappings.yaml b/placement/tests/functional/gabbits/allocations-mappings.yaml
index 6583c0109..f993368b0 100644
--- a/placement/tests/functional/gabbits/allocations-mappings.yaml
+++ b/placement/tests/functional/gabbits/allocations-mappings.yaml
@@ -81,8 +81,8 @@ tests:
       user_id: 8c974f9a-f266-42f7-8613-a8017cbfb87F
       project_id: b2e599e0-ded8-47fd-b8ab-ceb7fca578bd
   status: 400
-  response_json_paths:
-      $.errors[0].detail: "/JSON does not validate: {} does not have enough properties/"
+  response_json_paths:                                # jsonschema < 4.23.0               jsonschema >= 4.23.0
+      $.errors[0].detail: "/JSON does not validate: {} (does not have enough properties)|(should be non-empty)/"
 
 - name: post allocation with results
   POST: /allocations