diff --git a/equalsverifier-core/src/main/java/nl/jqno/equalsverifier/internal/prefabvalues/JavaApiPrefabValues.java b/equalsverifier-core/src/main/java/nl/jqno/equalsverifier/internal/prefabvalues/JavaApiPrefabValues.java
index 4214d9333..64db89b28 100644
--- a/equalsverifier-core/src/main/java/nl/jqno/equalsverifier/internal/prefabvalues/JavaApiPrefabValues.java
+++ b/equalsverifier-core/src/main/java/nl/jqno/equalsverifier/internal/prefabvalues/JavaApiPrefabValues.java
@@ -611,6 +611,29 @@ private void addAtomicClasses() {
                 );
             }
         );
+
+        DoubleAdder redDoubleAdder = new DoubleAdder();
+        DoubleAdder blueDoubleAdder = new DoubleAdder();
+        addValues(DoubleAdder.class, redDoubleAdder, blueDoubleAdder, redDoubleAdder);
+        DoubleAccumulator redDoubleAccumulator = new DoubleAccumulator((a, b) -> a + b, 0.0);
+        DoubleAccumulator blueDoubleAccumulator = new DoubleAccumulator((a, b) -> a * b, 1.0);
+        addValues(
+            DoubleAccumulator.class,
+            redDoubleAccumulator,
+            blueDoubleAccumulator,
+            redDoubleAccumulator
+        );
+        LongAdder redLongAdder = new LongAdder();
+        LongAdder blueLongAdder = new LongAdder();
+        addValues(LongAdder.class, redLongAdder, blueLongAdder, redLongAdder);
+        LongAccumulator redLongAccumulator = new LongAccumulator((a, b) -> a + b, 0);
+        LongAccumulator blueLongAccumulator = new LongAccumulator((a, b) -> a * b, 1);
+        addValues(
+            LongAccumulator.class,
+            redLongAccumulator,
+            blueLongAccumulator,
+            redLongAccumulator
+        );
     }
 
     private void addAncientJavaApiClasses() {
diff --git a/equalsverifier-core/src/test/java/nl/jqno/equalsverifier/integration/extended_contract/JavaApiClassesTest.java b/equalsverifier-core/src/test/java/nl/jqno/equalsverifier/integration/extended_contract/JavaApiClassesTest.java
index c20f45487..da892419a 100644
--- a/equalsverifier-core/src/test/java/nl/jqno/equalsverifier/integration/extended_contract/JavaApiClassesTest.java
+++ b/equalsverifier-core/src/test/java/nl/jqno/equalsverifier/integration/extended_contract/JavaApiClassesTest.java
@@ -106,6 +106,10 @@
 import java.util.concurrent.atomic.AtomicReference;
 import java.util.concurrent.atomic.AtomicReferenceArray;
 import java.util.concurrent.atomic.AtomicStampedReference;
+import java.util.concurrent.atomic.DoubleAccumulator;
+import java.util.concurrent.atomic.DoubleAdder;
+import java.util.concurrent.atomic.LongAccumulator;
+import java.util.concurrent.atomic.LongAdder;
 import java.util.concurrent.locks.StampedLock;
 import java.util.function.Supplier;
 import java.util.regex.Pattern;
@@ -742,6 +746,10 @@ static final class AtomicClassesContainer {
         private final AtomicReference<?> atomicReference;
         private final AtomicReferenceArray<?> atomicReferenceArray;
         private final AtomicStampedReference<?> atomicStampedReference;
+        private final DoubleAdder doubleAdder;
+        private final DoubleAccumulator doubleAccumulator;
+        private final LongAdder longAdder;
+        private final LongAccumulator longAccumulator;
 
         public AtomicClassesContainer(
             AtomicBoolean atomicBoolean,
@@ -752,7 +760,11 @@ public AtomicClassesContainer(
             AtomicMarkableReference<?> atomicMarkableReference,
             AtomicReference<?> atomicReference,
             AtomicReferenceArray<?> atomicReferenceArray,
-            AtomicStampedReference<?> atomicStampedReference
+            AtomicStampedReference<?> atomicStampedReference,
+            DoubleAdder doubleAdder,
+            DoubleAccumulator doubleAccumulator,
+            LongAdder longAdder,
+            LongAccumulator longAccumulator
         ) {
             this.atomicBoolean = atomicBoolean;
             this.atomicInteger = atomicInteger;
@@ -763,6 +775,10 @@ public AtomicClassesContainer(
             this.atomicReference = atomicReference;
             this.atomicReferenceArray = atomicReferenceArray;
             this.atomicStampedReference = atomicStampedReference;
+            this.doubleAdder = doubleAdder;
+            this.doubleAccumulator = doubleAccumulator;
+            this.longAdder = longAdder;
+            this.longAccumulator = longAccumulator;
         }
 
         @Override