diff --git a/pom.xml b/pom.xml
index 1bc8b349..dbe19096 100644
--- a/pom.xml
+++ b/pom.xml
@@ -22,8 +22,11 @@
         <version.logback>1.4.11</version.logback>
         <version.junit>5.10.0</version.junit>
         <version.json.io>4.14.1</version.json.io>           <!-- testing only -->
-        <version.mockito>1.10.19</version.mockito>          <!-- testing only -->
+        <version.mockito>5.6.0</version.mockito>          <!-- testing only -->
+        <version.mockito.inline>5.2.0</version.mockito.inline>          <!-- testing only -->
         <version.agrona>1.19.2</version.agrona>              <!-- testing only -->
+        <version.mockito.inline>5.2.0</version.mockito.inline>          <!-- testing only -->
+        <version.assertj>3.24.2</version.assertj>              <!-- testing only -->
         <version.plugin.compiler>3.11.0</version.plugin.compiler>
         <version.plugin.gpg>3.1.0</version.plugin.gpg>
         <version.plugin.javadoc>3.6.0</version.plugin.javadoc>
@@ -213,11 +216,33 @@
 
         <dependency>
             <groupId>org.mockito</groupId>
-            <artifactId>mockito-all</artifactId>
+            <artifactId>mockito-core</artifactId>
             <version>${version.mockito}</version>
             <scope>test</scope>
         </dependency>
 
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-junit-jupiter</artifactId>
+            <version>${version.mockito.inline}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-inline</artifactId>
+            <version>${version.mockito.inline}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <dependency>
+            <groupId>org.assertj</groupId>
+            <artifactId>assertj-core</artifactId>
+            <version>3.24.2</version>
+            <scope>test</scope>
+        </dependency>
+
+
         <dependency>
             <groupId>com.cedarsoftware</groupId>
             <artifactId>json-io</artifactId>
diff --git a/src/main/java/com/cedarsoftware/util/DeepEquals.java b/src/main/java/com/cedarsoftware/util/DeepEquals.java
index d9d520ee..e21d1424 100644
--- a/src/main/java/com/cedarsoftware/util/DeepEquals.java
+++ b/src/main/java/com/cedarsoftware/util/DeepEquals.java
@@ -5,6 +5,7 @@
 import java.math.BigDecimal;
 import java.util.*;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.concurrent.atomic.AtomicBoolean;
 
 import static com.cedarsoftware.util.Converter.convert2BigDecimal;
 import static com.cedarsoftware.util.Converter.convert2boolean;
@@ -211,6 +212,15 @@ private static boolean deepEquals(Object a, Object b, Map<String, ?> options, Se
                 continue;
             }
 
+            if (key1 instanceof AtomicBoolean && key2 instanceof AtomicBoolean)
+            {
+                if (!compareAtomicBoolean((AtomicBoolean)key1, (AtomicBoolean)key2)) {
+                    return false;
+                } else {
+                    continue;
+                }
+            }
+
             if (key1 instanceof Number || key2 instanceof Number)
             {   // If one is a Number and the other one is not, then optionally compare them as strings, otherwise return false
                 if (allowStringsToMatchNumbers)
@@ -593,7 +603,11 @@ private static boolean isContained(Object o, Collection<?> other, Set<ItemsToCom
         }
         return false;
     }
-    
+
+    private static boolean compareAtomicBoolean(AtomicBoolean a, AtomicBoolean b) {
+        return a.get() == b.get();
+    }
+
     private static boolean compareNumbers(Number a, Number b)
     {
         if (a instanceof Float && (b instanceof Float || b instanceof Double))
diff --git a/src/test/java/com/cedarsoftware/util/TestReflectionUtils.java b/src/test/java/com/cedarsoftware/util/TestReflectionUtils.java
index 18fb93e7..fb68ce3e 100644
--- a/src/test/java/com/cedarsoftware/util/TestReflectionUtils.java
+++ b/src/test/java/com/cedarsoftware/util/TestReflectionUtils.java
@@ -12,7 +12,10 @@
 import java.net.URLClassLoader;
 import java.util.*;
 
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
 
@@ -187,20 +190,11 @@ public void testMethodAnnotation() throws Exception
     @Test
     public void testGetDeclaredFields() throws Exception
     {
-        Class<?> c = Parent.class;
+        var fields = mock(ArrayList.class);
+        when(fields.add(any())).thenThrow(ThreadDeath.class);
 
-        Field f = c.getDeclaredField("foo");
-
-        Collection<Field> fields = mock(Collection.class);
-        when(fields.add(f)).thenThrow(new ThreadDeath());
-        try
-        {
-            ReflectionUtils.getDeclaredFields(Parent.class, fields);
-            fail("should not make it here");
-        }
-        catch (ThreadDeath ignored)
-        {
-        }
+        assertThatExceptionOfType(ThreadDeath.class)
+                .isThrownBy(() -> ReflectionUtils.getDeclaredFields(Parent.class, fields));
     }
 
     @Test