diff --git a/pom.xml b/pom.xml
index 3bbbf23..06636d9 100644
--- a/pom.xml
+++ b/pom.xml
@@ -15,6 +15,7 @@
         <jackson.version>2.13.4</jackson.version>
         <commons-lang3.version>3.12.0</commons-lang3.version>
         <google-jsr305.version>3.0.2</google-jsr305.version>
+        <joda-time.version>2.12.5</joda-time.version>
     </properties>
 
     <dependencies>
@@ -36,6 +37,13 @@
             <version>${google-jsr305.version}</version>
         </dependency>
 
+        <dependency>
+            <groupId>joda-time</groupId>
+            <artifactId>joda-time</artifactId>
+            <version>${joda-time.version}</version>
+            <optional>true</optional>
+        </dependency>
+
         <dependency>
             <groupId>ch.qos.logback</groupId>
             <artifactId>logback-classic</artifactId>
@@ -62,6 +70,13 @@
             <version>42.3.8</version>
             <scope>test</scope>
         </dependency>
+
+        <dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>31.1-jre</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>