diff --git a/formats/aci.py b/formats/aci.py
index b5c40effd..37e8917ab 100644
--- a/formats/aci.py
+++ b/formats/aci.py
@@ -33,26 +33,34 @@ class ACIImage(TarImageFormatter):
     def _isolate_memory(memory):
       return {
         "name": "memory/limit",
-        "value": str(memory) + 'B'
+        "value": {
+          "request": str(memory) + 'B',
+        }
       }
 
     def _isolate_swap(memory):
       return {
         "name": "memory/swap",
-        "value": str(memory) + 'B'
+        "value": {
+          "request": str(memory) + 'B',
+        }
       }
 
     def _isolate_cpu(cpu):
       return {
         "name": "cpu/shares",
-        "value": str(cpu)
+        "value": {
+          "request": str(cpu),
+        }
       }
 
     def _isolate_capabilities(capabilities_set_value):
       capabilities_set = re.split(r'[\s,]', capabilities_set_value)
       return {
-        "name": "capabilities/bounding-set",
-        "value": ' '.join(capabilities_set)
+        "name": "os/linux/capabilities-retain-set",
+        "value": {
+          "set": capabilities_set,
+        }
       }
 
     mappers = {
@@ -154,7 +162,7 @@ class ACIImage(TarImageFormatter):
 
     manifest = {
       "acKind": "ImageManifest",
-      "acVersion": "0.2.0",
+      "acVersion": "0.4.1",
       "name": '%s/%s/%s/%s' % (hostname, namespace, repository, tag),
       "labels": [
           {