diff --git a/engine/src/androidTest/java/com/google/android/fhir/db/impl/DatabaseImplTest.kt b/engine/src/androidTest/java/com/google/android/fhir/db/impl/DatabaseImplTest.kt
index e3c2d96986..1807b4b2d6 100644
--- a/engine/src/androidTest/java/com/google/android/fhir/db/impl/DatabaseImplTest.kt
+++ b/engine/src/androidTest/java/com/google/android/fhir/db/impl/DatabaseImplTest.kt
@@ -118,7 +118,7 @@ class DatabaseImplTest {
   @JvmField @Parameterized.Parameter(0) var encrypted: Boolean = false
 
   private val context: Context = ApplicationProvider.getApplicationContext()
-  private val parser = FhirContext.forCached(FhirVersionEnum.R4).newJsonParser()
+  private val parser = FhirContext.forR4Cached().newJsonParser()
   private lateinit var services: FhirServices
   private lateinit var database: Database
 
diff --git a/engine/src/androidTest/java/com/google/android/fhir/db/impl/EncryptedDatabaseErrorTest.kt b/engine/src/androidTest/java/com/google/android/fhir/db/impl/EncryptedDatabaseErrorTest.kt
index 0283e41c31..3a8f436ce3 100644
--- a/engine/src/androidTest/java/com/google/android/fhir/db/impl/EncryptedDatabaseErrorTest.kt
+++ b/engine/src/androidTest/java/com/google/android/fhir/db/impl/EncryptedDatabaseErrorTest.kt
@@ -49,8 +49,7 @@ import org.junit.runner.RunWith
 @RunWith(AndroidJUnit4::class)
 class EncryptedDatabaseErrorTest {
   private val context: Context = ApplicationProvider.getApplicationContext()
-  private val parser = FhirContext.forR4().newJsonParser()
-  private val terser = FhirTerser(FhirContext.forCached(FhirVersionEnum.R4))
+  private val terser = FhirTerser(FhirContext.forR4Cached())
   private val resourceIndexer = ResourceIndexer(SearchParamDefinitionsProviderImpl())
 
   @After
diff --git a/engine/src/main/java/com/google/android/fhir/db/impl/DatabaseImpl.kt b/engine/src/main/java/com/google/android/fhir/db/impl/DatabaseImpl.kt
index 736d39e385..5e93450acb 100644
--- a/engine/src/main/java/com/google/android/fhir/db/impl/DatabaseImpl.kt
+++ b/engine/src/main/java/com/google/android/fhir/db/impl/DatabaseImpl.kt
@@ -121,18 +121,9 @@ internal class DatabaseImpl(
         .build()
   }
 
-  private val resourceDao by lazy {
-    db.resourceDao().also {
-      it.iParser = FhirContext.forCached(FhirVersionEnum.R4).newJsonParser()
-      it.resourceIndexer = resourceIndexer
-    }
-  }
+  private val resourceDao by lazy { db.resourceDao().also { it.resourceIndexer = resourceIndexer } }
 
-  private val localChangeDao =
-    db.localChangeDao().also {
-      it.iParser = FhirContext.forCached(FhirVersionEnum.R4).newJsonParser()
-      it.fhirTerser = fhirTerser
-    }
+  private val localChangeDao = db.localChangeDao().also { it.fhirTerser = fhirTerser }
 
   override suspend fun <R : Resource> insert(vararg resource: R): List<String> {
     val logicalIds = mutableListOf<String>()
@@ -204,7 +195,7 @@ internal class DatabaseImpl(
 
   override suspend fun select(type: ResourceType, id: String): Resource {
     return resourceDao.getResource(resourceId = id, resourceType = type)?.let {
-      FhirContext.forCached(FhirVersionEnum.R4).newJsonParser().parseResource(it) as Resource
+      FhirContext.forR4Cached().newJsonParser().parseResource(it) as Resource
     }
       ?: throw ResourceNotFoundException(type.name, id)
   }
@@ -380,7 +371,7 @@ internal class DatabaseImpl(
     val updatedReferenceValue = "${updatedResource.resourceType.name}/${updatedResource.logicalId}"
     referringResourcesUuids.forEach { resourceUuid ->
       resourceDao.getResourceEntity(resourceUuid)?.let {
-        val iParser = FhirContext.forCached(FhirVersionEnum.R4).newJsonParser()
+        val iParser = FhirContext.forR4Cached().newJsonParser()
         val referringResource = iParser.parseResource(it.serializedResource) as Resource
         val updatedReferringResource =
           addUpdatedReferenceToResource(
diff --git a/engine/src/main/java/com/google/android/fhir/db/impl/dao/LocalChangeDao.kt b/engine/src/main/java/com/google/android/fhir/db/impl/dao/LocalChangeDao.kt
index 68069b8ab7..158067cb85 100644
--- a/engine/src/main/java/com/google/android/fhir/db/impl/dao/LocalChangeDao.kt
+++ b/engine/src/main/java/com/google/android/fhir/db/impl/dao/LocalChangeDao.kt
@@ -21,6 +21,7 @@ import androidx.room.Insert
 import androidx.room.OnConflictStrategy
 import androidx.room.Query
 import androidx.room.Transaction
+import ca.uhn.fhir.context.FhirContext
 import ca.uhn.fhir.parser.IParser
 import ca.uhn.fhir.util.FhirTerser
 import ca.uhn.fhir.util.ResourceReferenceInfo
@@ -50,8 +51,6 @@ import timber.log.Timber
  */
 @Dao
 internal abstract class LocalChangeDao {
-
-  lateinit var iParser: IParser
   lateinit var fhirTerser: FhirTerser
 
   @Insert(onConflict = OnConflictStrategy.REPLACE)
@@ -70,7 +69,7 @@ internal abstract class LocalChangeDao {
   open suspend fun addInsert(resource: Resource, resourceUuid: UUID, timeOfLocalChange: Instant) {
     val resourceId = resource.logicalId
     val resourceType = resource.resourceType
-    val resourceString = iParser.encodeResourceToString(resource)
+    val resourceString = FhirContext.forR4Cached().newJsonParser().encodeResourceToString(resource)
 
     val localChangeEntity =
       LocalChangeEntity(
@@ -128,6 +127,7 @@ internal abstract class LocalChangeDao {
         "Unexpected DELETE when updating $resourceType/$resourceId. UPDATE failed.",
       )
     }
+    val iParser = FhirContext.forR4Cached().newJsonParser()
     val oldResource = iParser.parseResource(oldEntity.serializedResource) as Resource
     val jsonDiff = diff(iParser, oldResource, updatedResource)
     if (jsonDiff.length() == 0) {
@@ -475,6 +475,7 @@ internal abstract class LocalChangeDao {
     oldReference: String,
     updatedReference: String,
   ): LocalChangeEntity {
+    val iParser = FhirContext.forR4Cached().newJsonParser()
     return when (localChange.type) {
       LocalChangeEntity.Type.INSERT -> {
         val insertResourcePayload = iParser.parseResource(localChange.payload) as Resource
diff --git a/engine/src/main/java/com/google/android/fhir/db/impl/dao/ResourceDao.kt b/engine/src/main/java/com/google/android/fhir/db/impl/dao/ResourceDao.kt
index 0f219d84dd..65015fc9c8 100644
--- a/engine/src/main/java/com/google/android/fhir/db/impl/dao/ResourceDao.kt
+++ b/engine/src/main/java/com/google/android/fhir/db/impl/dao/ResourceDao.kt
@@ -24,7 +24,7 @@ import androidx.room.OnConflictStrategy
 import androidx.room.Query
 import androidx.room.RawQuery
 import androidx.sqlite.db.SupportSQLiteQuery
-import ca.uhn.fhir.parser.IParser
+import ca.uhn.fhir.context.FhirContext
 import com.google.android.fhir.db.ResourceNotFoundException
 import com.google.android.fhir.db.impl.entities.DateIndexEntity
 import com.google.android.fhir.db.impl.entities.DateTimeIndexEntity
@@ -55,7 +55,6 @@ import org.hl7.fhir.r4.model.ResourceType
 internal abstract class ResourceDao {
   // this is ugly but there is no way to inject these right now in Room as it is the one creating
   // the dao
-  lateinit var iParser: IParser
   lateinit var resourceIndexer: ResourceIndexer
 
   /**
@@ -69,7 +68,8 @@ internal abstract class ResourceDao {
     getResourceEntity(resource.logicalId, resource.resourceType)?.let {
       val entity =
         it.copy(
-          serializedResource = iParser.encodeResourceToString(resource),
+          serializedResource =
+            FhirContext.forR4Cached().newJsonParser().encodeResourceToString(resource),
           lastUpdatedLocal = timeOfLocalChange,
           lastUpdatedRemote = resource.meta.lastUpdated?.toInstant() ?: it.lastUpdatedRemote,
         )
@@ -86,7 +86,8 @@ internal abstract class ResourceDao {
       val entity =
         it.copy(
           resourceId = updatedResource.logicalId,
-          serializedResource = iParser.encodeResourceToString(updatedResource),
+          serializedResource =
+            FhirContext.forR4Cached().newJsonParser().encodeResourceToString(updatedResource),
           lastUpdatedRemote = updatedResource.lastUpdated ?: it.lastUpdatedRemote,
           versionId = updatedResource.versionId ?: it.versionId,
         )
@@ -107,7 +108,8 @@ internal abstract class ResourceDao {
     getResourceEntity(resource.logicalId, resource.resourceType)?.let {
       val entity =
         it.copy(
-          serializedResource = iParser.encodeResourceToString(resource),
+          serializedResource =
+            FhirContext.forR4Cached().newJsonParser().encodeResourceToString(resource),
           lastUpdatedRemote = resource.meta.lastUpdated?.toInstant(),
           versionId = resource.versionId,
         )
@@ -267,7 +269,8 @@ internal abstract class ResourceDao {
         resourceType = resource.resourceType,
         resourceUuid = resourceUuid,
         resourceId = resource.logicalId,
-        serializedResource = iParser.encodeResourceToString(resource),
+        serializedResource =
+          FhirContext.forR4Cached().newJsonParser().encodeResourceToString(resource),
         versionId = resource.versionId,
         lastUpdatedRemote = resource.lastUpdated,
         lastUpdatedLocal = lastUpdatedLocal,
@@ -297,7 +300,10 @@ internal abstract class ResourceDao {
     lastUpdatedRemote: Instant?,
   ) {
     getResourceEntity(resourceId, resourceType)?.let { oldResourceEntity ->
-      val resource = iParser.parseResource(oldResourceEntity.serializedResource) as Resource
+      val resource =
+        FhirContext.forR4Cached()
+          .newJsonParser()
+          .parseResource(oldResourceEntity.serializedResource) as Resource
       resource.updateMeta(versionId, lastUpdatedRemote)
       updateResourceWithUuid(oldResourceEntity.resourceUuid, resource)
     }
diff --git a/engine/src/main/java/com/google/android/fhir/sync/upload/request/UrlRequestGenerator.kt b/engine/src/main/java/com/google/android/fhir/sync/upload/request/UrlRequestGenerator.kt
index 8e576760c3..d868cf2467 100644
--- a/engine/src/main/java/com/google/android/fhir/sync/upload/request/UrlRequestGenerator.kt
+++ b/engine/src/main/java/com/google/android/fhir/sync/upload/request/UrlRequestGenerator.kt
@@ -17,7 +17,6 @@
 package com.google.android.fhir.sync.upload.request
 
 import ca.uhn.fhir.context.FhirContext
-import ca.uhn.fhir.context.FhirVersionEnum
 import com.google.android.fhir.ContentTypes
 import com.google.android.fhir.sync.upload.patch.Patch
 import com.google.android.fhir.sync.upload.patch.PatchMapping
@@ -58,8 +57,6 @@ internal class UrlRequestGenerator(
 
   companion object Factory {
 
-    private val parser = FhirContext.forCached(FhirVersionEnum.R4).newJsonParser()
-
     private val createMapping =
       mapOf(
         HttpVerb.POST to this::postForCreateResource,
@@ -107,21 +104,24 @@ internal class UrlRequestGenerator(
       UrlUploadRequest(
         httpVerb = HttpVerb.DELETE,
         url = "${patch.resourceType}/${patch.resourceId}",
-        resource = parser.parseResource(patch.payload) as Resource,
+        resource =
+          FhirContext.forR4Cached().newJsonParser().parseResource(patch.payload) as Resource,
       )
 
     private fun postForCreateResource(patch: Patch) =
       UrlUploadRequest(
         httpVerb = HttpVerb.POST,
         url = patch.resourceType,
-        resource = parser.parseResource(patch.payload) as Resource,
+        resource =
+          FhirContext.forR4Cached().newJsonParser().parseResource(patch.payload) as Resource,
       )
 
     private fun putForCreateResource(patch: Patch) =
       UrlUploadRequest(
         httpVerb = HttpVerb.PUT,
         url = "${patch.resourceType}/${patch.resourceId}",
-        resource = parser.parseResource(patch.payload) as Resource,
+        resource =
+          FhirContext.forR4Cached().newJsonParser().parseResource(patch.payload) as Resource,
       )
 
     private fun patchForUpdateResource(patch: Patch) =
diff --git a/engine/src/test/java/com/google/android/fhir/impl/FhirEngineImplTest.kt b/engine/src/test/java/com/google/android/fhir/impl/FhirEngineImplTest.kt
index 7fc0803492..64bfc6ace4 100644
--- a/engine/src/test/java/com/google/android/fhir/impl/FhirEngineImplTest.kt
+++ b/engine/src/test/java/com/google/android/fhir/impl/FhirEngineImplTest.kt
@@ -18,7 +18,6 @@ package com.google.android.fhir.impl
 
 import androidx.test.core.app.ApplicationProvider
 import ca.uhn.fhir.context.FhirContext
-import ca.uhn.fhir.context.FhirVersionEnum
 import ca.uhn.fhir.rest.gclient.TokenClientParam
 import ca.uhn.fhir.rest.param.ParamPrefixEnum
 import com.google.android.fhir.FhirServices.Companion.builder
@@ -76,7 +75,7 @@ import org.robolectric.RobolectricTestRunner
 class FhirEngineImplTest {
   private val services = builder(ApplicationProvider.getApplicationContext()).inMemory().build()
   private val fhirEngine = services.fhirEngine
-  private val parser = FhirContext.forCached(FhirVersionEnum.R4).newJsonParser()
+  private val parser = FhirContext.forR4Cached().newJsonParser()
 
   @Before fun setUp(): Unit = runBlocking { fhirEngine.create(TEST_PATIENT_1) }
 
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 8f273e2bd1..79fc02d4d8 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -4,7 +4,7 @@
 android-fhir-common = "0.1.0-alpha05"
 android-fhir-engine = "0.1.0-beta05"
 android-fhir-knowledge = "0.1.0-beta01"
-androidx-acivity = "1.7.2"
+androidx-activity = "1.7.2"
 androidx-appcompat = "1.6.1"
 androidx-arch-core = "2.2.0"
 androidx-benchmark = "1.1.1"
@@ -37,7 +37,7 @@ material = "1.9.0"
 android-fhir-common = { module = "com.google.android.fhir:common", version.ref = "android-fhir-common" }
 android-fhir-engine = { module = "com.google.android.fhir:engine", version.ref = "android-fhir-engine" }
 android-fhir-knowledge = { module = "com.google.android.fhir:knowledge", version.ref = "android-fhir-knowledge" }
-androidx-activity = { module = "androidx.activity:activity", version.ref = "androidx-acivity" }
+androidx-activity = { module = "androidx.activity:activity", version.ref = "androidx-activity" }
 androidx-appcompat = { module = "androidx.appcompat:appcompat", version.ref = "androidx-appcompat" }
 androidx-arch-core-testing = { module = "androidx.arch.core:core-testing", version.ref = "androidx-arch-core" }
 androidx-benchmark-junit4 = { module = "androidx.benchmark:benchmark-junit4", version.ref = "androidx-benchmark" }
diff --git a/knowledge/src/main/java/com/google/android/fhir/knowledge/KnowledgeManager.kt b/knowledge/src/main/java/com/google/android/fhir/knowledge/KnowledgeManager.kt
index 4d0c0ad1b0..953b936e26 100644
--- a/knowledge/src/main/java/com/google/android/fhir/knowledge/KnowledgeManager.kt
+++ b/knowledge/src/main/java/com/google/android/fhir/knowledge/KnowledgeManager.kt
@@ -19,7 +19,6 @@ package com.google.android.fhir.knowledge
 import android.content.Context
 import androidx.room.Room
 import ca.uhn.fhir.context.FhirContext
-import ca.uhn.fhir.context.FhirVersionEnum
 import com.google.android.fhir.knowledge.db.KnowledgeDatabase
 import com.google.android.fhir.knowledge.db.entities.ImplementationGuideEntity
 import com.google.android.fhir.knowledge.db.entities.ResourceMetadataEntity
@@ -295,8 +294,7 @@ internal constructor(
   private suspend fun readResourceOrNull(file: File): IBaseResource? =
     withContext(Dispatchers.IO) {
       try {
-        FileInputStream(file)
-          .use(FhirContext.forCached(FhirVersionEnum.R4).newJsonParser()::parseResource)
+        FileInputStream(file).use(FhirContext.forR4Cached().newJsonParser()::parseResource)
       } catch (e: Exception) {
         Timber.e(e, "Unable to load resource from $file")
         null