diff --git a/src/java/pom.xml b/src/java/pom.xml
index b382510..0ca3107 100644
--- a/src/java/pom.xml
+++ b/src/java/pom.xml
@@ -25,6 +25,10 @@
         <url>https://git.bitbadger.solutions/bit-badger/solutions.bitbadger.documents</url>
     </scm>
 
+    <properties>
+        <jackson.version>2.18.2</jackson.version>
+    </properties>
+
     <dependencies>
         <dependency>
             <groupId>solutions.bitbadger.documents</groupId>
@@ -34,6 +38,12 @@
             <systemPath>${project.basedir}/../common/target/common-4.0.0-alpha1-SNAPSHOT.jar</systemPath>
             <type>jar</type>
         </dependency>
+        <dependency>
+            <groupId>com.fasterxml.jackson.core</groupId>
+            <artifactId>jackson-databind</artifactId>
+            <version>${jackson.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -65,8 +75,8 @@
                         </goals>
                         <configuration>
                             <sourceDirs>
-                                <sourceDir>${project.basedir}/src/test/java</sourceDir>
                                 <sourceDir>${project.basedir}/src/test/kotlin</sourceDir>
+                                <sourceDir>${project.basedir}/src/test/java</sourceDir>
                             </sourceDirs>
                         </configuration>
                     </execution>
diff --git a/src/java/src/test/kotlin/JacksonDocumentSerializer.kt b/src/java/src/test/kotlin/JacksonDocumentSerializer.kt
new file mode 100644
index 0000000..f491be5
--- /dev/null
+++ b/src/java/src/test/kotlin/JacksonDocumentSerializer.kt
@@ -0,0 +1,18 @@
+package solutions.bitbadger.documents.java
+
+import solutions.bitbadger.documents.common.DocumentSerializer
+import com.fasterxml.jackson.databind.ObjectMapper
+
+/**
+ * A JSON serializer using Jackson's default options
+ */
+class JacksonDocumentSerializer : DocumentSerializer {
+
+    val mapper = ObjectMapper()
+
+    override fun <TDoc> serialize(document: TDoc) =
+        mapper.writeValueAsString(document)
+
+    override fun <TDoc> deserialize(json: String, clazz: Class<TDoc>) =
+        mapper.readValue(json, clazz)
+}
diff --git a/src/java/src/test/kotlin/integration/Types.kt b/src/java/src/test/kotlin/integration/Types.kt
index 730caa0..d239866 100644
--- a/src/java/src/test/kotlin/integration/Types.kt
+++ b/src/java/src/test/kotlin/integration/Types.kt
@@ -7,13 +7,20 @@ import solutions.bitbadger.documents.java.insert
 const val TEST_TABLE = "test_table"
 
 @Serializable
-data class NumIdDocument(val key: Int, val text: String)
+data class NumIdDocument(val key: Int, val text: String) {
+    constructor() : this(0, "")
+}
 
 @Serializable
-data class SubDocument(val foo: String, val bar: String)
+data class SubDocument(val foo: String, val bar: String) {
+    constructor() : this("", "")
+}
 
 @Serializable
 data class ArrayDocument(val id: String, val values: List<String>) {
+
+    constructor() : this("", listOf())
+
     companion object {
         /** A set of documents used for integration tests */
         val testDocuments = listOf(
@@ -26,6 +33,9 @@ data class ArrayDocument(val id: String, val values: List<String>) {
 
 @Serializable
 data class JsonDocument(val id: String, val value: String = "", val numValue: Int = 0, val sub: SubDocument? = null) {
+
+    constructor() : this("")
+
     companion object {
         /** Documents to use for testing */
         private val testDocuments = listOf(
diff --git a/src/java/src/test/kotlin/integration/postgresql/PgDB.kt b/src/java/src/test/kotlin/integration/postgresql/PgDB.kt
index 902acc1..87413b1 100644
--- a/src/java/src/test/kotlin/integration/postgresql/PgDB.kt
+++ b/src/java/src/test/kotlin/integration/postgresql/PgDB.kt
@@ -13,6 +13,7 @@ class PgDB : ThrowawayDatabase {
     private var dbName = ""
 
     init {
+        DocumentConfig.serializer = JacksonDocumentSerializer()
         dbName = "throwaway_${AutoId.generateRandomString(8)}"
         Configuration.connectionString = connString("postgres")
         Configuration.dbConn().use {
diff --git a/src/java/src/test/kotlin/integration/sqlite/SQLiteDB.kt b/src/java/src/test/kotlin/integration/sqlite/SQLiteDB.kt
index 0b98253..5075ae7 100644
--- a/src/java/src/test/kotlin/integration/sqlite/SQLiteDB.kt
+++ b/src/java/src/test/kotlin/integration/sqlite/SQLiteDB.kt
@@ -14,6 +14,7 @@ class SQLiteDB : ThrowawayDatabase {
     private var dbName = ""
 
     init {
+        DocumentConfig.serializer = JacksonDocumentSerializer()
         dbName = "test-db-${AutoId.generateRandomString(8)}.db"
         Configuration.connectionString = "jdbc:sqlite:$dbName"
     }