diff --git a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/VersionUtilities.java b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/VersionUtilities.java
index ef77fda91..4c0b50db6 100644
--- a/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/VersionUtilities.java
+++ b/org.hl7.fhir.utilities/src/main/java/org/hl7/fhir/utilities/VersionUtilities.java
@@ -407,6 +407,17 @@ public class VersionUtilities {
   }
 
 
+  /** same as getCanonicalResourceNames but add R5 supported types that are canonical too */
+  public static Set<String> getExtendedCanonicalResourceNames(String version) {
+    Set<String> res = getCanonicalResourceNames(version);
+    if (isR4Ver(version)) {
+      res.add("ActorDefinition");
+      res.add("Requirements");
+      res.add("SubscriptionTopic");
+      res.add("TestPlan");
+    }
+    return res;
+  }
   public static Set<String> getCanonicalResourceNames(String version) {
 
     Set<String> res = new HashSet<String>();
diff --git a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java
index 0bc29f1b2..4d013d967 100644
--- a/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java
+++ b/org.hl7.fhir.validation/src/main/java/org/hl7/fhir/validation/instance/InstanceValidator.java
@@ -2218,7 +2218,7 @@ public class InstanceValidator extends BaseValidator implements IResourceValidat
           ok = true;
         } else if (en.equals("Resource") && container.isResource()) {
           ok = true;
-        } else if (en.equals("CanonicalResource") && VersionUtilities.getCanonicalResourceNames(context.getVersion()).contains(stack.getLiteralPath())) {
+        } else if (en.equals("CanonicalResource") && VersionUtilities.getExtendedCanonicalResourceNames(context.getVersion()).contains(stack.getLiteralPath())) {
           ok = true;
         } else if (hasElementName(plist, en) && pu == null) {
           ok = true;