diff --git a/datatypes/src/main/java/com/fasterxml/jackson/datatype/jdk8/Jdk8Deserializers.java b/datatypes/src/main/java/com/fasterxml/jackson/datatype/jdk8/Jdk8Deserializers.java
index dd2a4f25..cdddc32f 100644
--- a/datatypes/src/main/java/com/fasterxml/jackson/datatype/jdk8/Jdk8Deserializers.java
+++ b/datatypes/src/main/java/com/fasterxml/jackson/datatype/jdk8/Jdk8Deserializers.java
@@ -7,7 +7,7 @@
 import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
 import com.fasterxml.jackson.databind.type.ReferenceType;
 
-class Jdk8Deserializers extends Deserializers.Base
+public class Jdk8Deserializers extends Deserializers.Base
 {
     // 21-Oct-2015, tatu: Code much simplified with 2.7 where we should be getting much
     //    of boilerplate handling automatically
diff --git a/datatypes/src/main/java/com/fasterxml/jackson/datatype/jdk8/Jdk8Serializers.java b/datatypes/src/main/java/com/fasterxml/jackson/datatype/jdk8/Jdk8Serializers.java
index 555e1608..a9a64d9b 100644
--- a/datatypes/src/main/java/com/fasterxml/jackson/datatype/jdk8/Jdk8Serializers.java
+++ b/datatypes/src/main/java/com/fasterxml/jackson/datatype/jdk8/Jdk8Serializers.java
@@ -18,7 +18,7 @@
 import java.util.stream.LongStream;
 import java.util.stream.Stream;
 
-class Jdk8Serializers extends Serializers.Base
+public class Jdk8Serializers extends Serializers.Base
 {
     @Override
     public JsonSerializer<?> findReferenceSerializer(SerializationConfig config,
@@ -38,7 +38,7 @@ public JsonSerializer<?> findReferenceSerializer(SerializationConfig config,
         if (OptionalDouble.class.isAssignableFrom(raw)) {
             return OptionalDoubleSerializer.INSTANCE;
         }
-        return findReferenceSerializer(config, refType, beanDesc, contentTypeSerializer, contentValueSerializer);
+        return null;
     }
 
     @Override
@@ -59,6 +59,6 @@ public JsonSerializer<?> findSerializer(SerializationConfig config, JavaType typ
             JavaType vt = (params == null || params.length != 1) ? TypeFactory.unknownType() : params[0];
             return new StreamSerializer(config.getTypeFactory().constructParametrizedType(Stream.class, Stream.class, vt), vt);
         }
-        return super.findSerializer(config, type, beanDesc);
+        return null;
     }
 }
diff --git a/datatypes/src/test/java/com/fasterxml/jackson/datatype/jdk8/OptionalBasicTest.java b/datatypes/src/test/java/com/fasterxml/jackson/datatype/jdk8/OptionalBasicTest.java
index 95b40d8b..057be532 100644
--- a/datatypes/src/test/java/com/fasterxml/jackson/datatype/jdk8/OptionalBasicTest.java
+++ b/datatypes/src/test/java/com/fasterxml/jackson/datatype/jdk8/OptionalBasicTest.java
@@ -1,6 +1,7 @@
 package com.fasterxml.jackson.datatype.jdk8;
 
 import java.util.*;
+import java.util.concurrent.atomic.AtomicReference;
 
 import com.fasterxml.jackson.annotation.*;
 import com.fasterxml.jackson.annotation.JsonAutoDetect.Visibility;
diff --git a/datatypes/src/test/java/com/fasterxml/jackson/datatype/jdk8/OptionalTest.java b/datatypes/src/test/java/com/fasterxml/jackson/datatype/jdk8/OptionalTest.java
index 0b421884..0309c095 100644
--- a/datatypes/src/test/java/com/fasterxml/jackson/datatype/jdk8/OptionalTest.java
+++ b/datatypes/src/test/java/com/fasterxml/jackson/datatype/jdk8/OptionalTest.java
@@ -2,6 +2,7 @@
 
 import java.io.IOException;
 import java.util.*;
+import java.util.concurrent.atomic.AtomicReference;
 
 import com.fasterxml.jackson.annotation.*;
 
@@ -11,6 +12,7 @@
 import com.fasterxml.jackson.core.type.TypeReference;
 
 import com.fasterxml.jackson.databind.DeserializationContext;
+import com.fasterxml.jackson.databind.JavaType;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.fasterxml.jackson.databind.SerializerProvider;
 import com.fasterxml.jackson.databind.annotation.JsonDeserialize;
@@ -250,6 +252,13 @@ public void testCustomSerializer() throws Exception
         assertEquals(json, aposToQuotes("{'value':'FOOBAR'}"));
     }
 
+    // [modules-java8#33]: Verify against regression...
+    public void testOtherRefSerializers() throws Exception
+    {
+        String json = MAPPER.writeValueAsString(new AtomicReference<String>("foo"));
+        assertEquals(quote("foo"), json);
+    }
+
     /*
     /**********************************************************
     /* Helper methods
diff --git a/release-notes/CREDITS b/release-notes/CREDITS
index ca0b80b3..b0f64207 100644
--- a/release-notes/CREDITS
+++ b/release-notes/CREDITS
@@ -7,3 +7,8 @@ Louis-Rémi Paquet (lrpg@github)
 * Reported #15: Optional<Long> and OptionalLong deserialization
   not consistent when deserializing from String
  (2.8.8)
+
+Mikko Tiihonen (gmokki@github)
+* Reported #33: `Jdk8Serializer.findReferenceSerializer()` leads to `StackOverflowError`
+  in 2.8.9
+ (2.8.10)
diff --git a/release-notes/VERSION b/release-notes/VERSION
index 69806784..2de38a6f 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -8,6 +8,11 @@ Modules:
 === Releases ===
 ------------------------------------------------------------------------
 
+2.8.10 (not yet released)
+
+#33: `Jdk8Serializer.findReferenceSerializer()` leads to `StackOverflowError` in 2.8.9
+ (reported by Mikko T)
+
 2.8.9 (12-Jun-2017)
 
 No changes since 2.8.8