diff --git a/engine.fhir/src/main/java/org/opencds/cqf/cql/engine/fhir/model/Dstu3FhirModelResolver.java b/engine.fhir/src/main/java/org/opencds/cqf/cql/engine/fhir/model/Dstu3FhirModelResolver.java
index f2f15dfda..0b6e60f2c 100644
--- a/engine.fhir/src/main/java/org/opencds/cqf/cql/engine/fhir/model/Dstu3FhirModelResolver.java
+++ b/engine.fhir/src/main/java/org/opencds/cqf/cql/engine/fhir/model/Dstu3FhirModelResolver.java
@@ -318,6 +318,10 @@ public Object getContextPath(String contextType, String targetType) {
             return "subject";
         }
 
+        if (contextType.equals("Patient") && targetType.equals("Task")) {
+            return "for";
+        }
+
         return super.getContextPath(contextType, targetType);
     }
 }
\ No newline at end of file
diff --git a/engine.fhir/src/main/java/org/opencds/cqf/cql/engine/fhir/model/R4FhirModelResolver.java b/engine.fhir/src/main/java/org/opencds/cqf/cql/engine/fhir/model/R4FhirModelResolver.java
index e547fa3fa..94fa2b2aa 100644
--- a/engine.fhir/src/main/java/org/opencds/cqf/cql/engine/fhir/model/R4FhirModelResolver.java
+++ b/engine.fhir/src/main/java/org/opencds/cqf/cql/engine/fhir/model/R4FhirModelResolver.java
@@ -356,6 +356,10 @@ public Object getContextPath(String contextType, String targetType) {
             return "subject";
         }
 
+        if (contextType.equals("Patient") && targetType.equals("Task")) {
+            return "for";
+        }
+
         return super.getContextPath(contextType, targetType);
     }
 }
\ No newline at end of file
diff --git a/engine.fhir/src/test/java/org/opencds/cqf/cql/engine/fhir/model/TestDstu3ModelResolver.java b/engine.fhir/src/test/java/org/opencds/cqf/cql/engine/fhir/model/TestDstu3ModelResolver.java
index c3ccb7a90..a12916163 100644
--- a/engine.fhir/src/test/java/org/opencds/cqf/cql/engine/fhir/model/TestDstu3ModelResolver.java
+++ b/engine.fhir/src/test/java/org/opencds/cqf/cql/engine/fhir/model/TestDstu3ModelResolver.java
@@ -1,5 +1,6 @@
 package org.opencds.cqf.cql.engine.fhir.model;
 
+import static org.testng.Assert.assertEquals;
 import static org.testng.Assert.assertNotNull;
 import static org.testng.Assert.assertNull;
 import static org.testng.Assert.assertTrue;
@@ -218,7 +219,7 @@ public void contextPathTests() {
 
         String path = (String) resolver.getContextPath("Patient", "Patient");
         assertNotNull(path);
-        assertTrue(path.equals("id"));
+        assertEquals(path, "id");
 
         path = (String) resolver.getContextPath(null, "Encounter");
         assertNull(path);
@@ -230,22 +231,25 @@ public void contextPathTests() {
 
         path = (String) resolver.getContextPath("Patient", "Condition");
         assertNotNull(path);
-        assertTrue(path.equals("subject"));
+        assertEquals(path, "subject");
 
         path = (String) resolver.getContextPath("Patient", "Appointment");
         assertNotNull(path);
-        assertTrue(path.equals("participant.actor"));
+        assertEquals(path, "participant.actor");
 
         path = (String) resolver.getContextPath("Patient", "Account");
         assertNotNull(path);
-        assertTrue(path.equals("subject"));
+        assertEquals(path, "subject");
 
         path = (String) resolver.getContextPath("Patient", "Encounter");
         assertNotNull(path);
-        assertTrue(path.equals("subject"));
+        assertEquals(path, "subject");
 
         path = (String) resolver.getContextPath("Patient", "MedicationStatement");
-        assertTrue(path.equals("subject"));
+        assertEquals(path, "subject");
+
+        path = (String) resolver.getContextPath("Patient", "Task");
+        assertEquals(path, "for");
 
         // Issue 527 - https://github.com/DBCG/cql_engine/issues/527
         path = (String) resolver.getContextPath("Unfiltered", "MedicationStatement");
diff --git a/engine.fhir/src/test/java/org/opencds/cqf/cql/engine/fhir/model/TestR4ModelResolver.java b/engine.fhir/src/test/java/org/opencds/cqf/cql/engine/fhir/model/TestR4ModelResolver.java
index 1c001133e..a085a850b 100644
--- a/engine.fhir/src/test/java/org/opencds/cqf/cql/engine/fhir/model/TestR4ModelResolver.java
+++ b/engine.fhir/src/test/java/org/opencds/cqf/cql/engine/fhir/model/TestR4ModelResolver.java
@@ -2,6 +2,7 @@
 
 import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.is;
+import static org.testng.Assert.assertEquals;
 import static org.testng.Assert.assertNotNull;
 import static org.testng.Assert.assertNull;
 import static org.testng.Assert.assertTrue;
@@ -291,7 +292,7 @@ public void createInstanceTests() {
 
     @Test
     public void contextPathTests() {
-        ModelResolver resolver = new Dstu3FhirModelResolver(FhirContext.forCached(FhirVersionEnum.DSTU3));
+        ModelResolver resolver = new R4FhirModelResolver(FhirContext.forCached(FhirVersionEnum.R4));
 
         String path = (String)resolver.getContextPath("Patient", "Patient");
         assertNotNull(path);
@@ -307,25 +308,28 @@ public void contextPathTests() {
 
         path = (String)resolver.getContextPath("Patient", "Condition");
         assertNotNull(path);
-        assertTrue(path.equals("subject"));
+        assertEquals(path, "subject");
 
         path = (String)resolver.getContextPath("Patient", "Appointment");
         assertNotNull(path);
-        assertTrue(path.equals("participant.actor"));
+        assertEquals(path, "participant.actor");
 
         path = (String)resolver.getContextPath("Patient", "Account");
         assertNotNull(path);
-        assertTrue(path.equals("subject"));
+        assertEquals(path, "subject");
 
         path = (String)resolver.getContextPath("Patient", "Encounter");
         assertNotNull(path);
-        assertTrue(path.equals("subject"));
+        assertEquals(path, "subject");
 
         path = (String)resolver.getContextPath("Patient", "ValueSet");
         assertNull(path);
 
         path = (String)resolver.getContextPath("Patient", "MedicationStatement");
-        assertTrue(path.equals("subject"));
+        assertEquals(path, "subject");
+
+        path = (String)resolver.getContextPath("Patient", "Task");
+        assertEquals(path, "for");
 
         // Issue 527 - https://github.com/DBCG/cql_engine/issues/527
         path = (String)resolver.getContextPath("Unfiltered", "MedicationStatement");
diff --git a/engine.jackson/pom.xml b/engine.jackson/pom.xml
index debc0c5d6..6f515a8f2 100644
--- a/engine.jackson/pom.xml
+++ b/engine.jackson/pom.xml
@@ -84,6 +84,16 @@
             <artifactId>elm-jackson</artifactId>
             <scope>test</scope>
         </dependency>
+
+        <!-- dependencies required for Android -->
+        <!-- required to add due to the special QName Processor -->
+        <dependency>
+            <groupId>xerces</groupId>
+            <artifactId>xercesImpl</artifactId>
+            <version>2.12.2</version>
+            <scope>provided</scope>
+            <optional>true</optional>
+        </dependency>
     </dependencies>
     <build>
         <plugins>
@@ -125,6 +135,10 @@
                         </rules>
                     </configuration>
                 </plugin>
+                <plugin>
+                    <groupId>org.codehaus.mojo</groupId>
+                    <artifactId>animal-sniffer-maven-plugin</artifactId>
+                </plugin>
             </plugins>
         </pluginManagement>
     </build>