diff --git a/spring-datastore-keyvalue-parent/pom.xml b/spring-datastore-keyvalue-parent/pom.xml
index 4cd52ec6a..1604f08f6 100644
--- a/spring-datastore-keyvalue-parent/pom.xml
+++ b/spring-datastore-keyvalue-parent/pom.xml
@@ -14,9 +14,9 @@
     <!-- versions for commonly-used dependencies -->
     <junit.version>4.8.1</junit.version>
     <log4j.version>1.2.15</log4j.version>
-    <org.codehaus.jackson.version>1.5.6</org.codehaus.jackson.version>
+    <org.codehaus.jackson.version>1.6.1</org.codehaus.jackson.version>
     <org.mockito.version>1.8.4</org.mockito.version>
-    <org.slf4j.version>1.5.10</org.slf4j.version>
+    <org.slf4j.version>1.5.8</org.slf4j.version>
     <org.springframework.version>3.0.5.RELEASE</org.springframework.version>
     <!-- dist.* properties are used by the antrun tasks below -->
     <dist.id>spring-datastore-keyvalue</dist.id>
diff --git a/spring-datastore-riak/pom.xml b/spring-datastore-riak/pom.xml
index 4cdf2754f..246348fc9 100644
--- a/spring-datastore-riak/pom.xml
+++ b/spring-datastore-riak/pom.xml
@@ -50,16 +50,17 @@
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-api</artifactId>
+      <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>jcl-over-slf4j</artifactId>
-      <scope>compile</scope>
+      <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>org.slf4j</groupId>
       <artifactId>slf4j-log4j12</artifactId>
-      <scope>runtime</scope>
+      <scope>provided</scope>
     </dependency>
     <dependency>
       <groupId>log4j</groupId>
@@ -82,7 +83,7 @@
           <artifactId>jmxri</artifactId>
         </exclusion>
       </exclusions>
-      <scope>runtime</scope>
+      <scope>provided</scope>
     </dependency>
 
     <dependency>
diff --git a/spring-datastore-riak/src/main/java/org/springframework/datastore/riak/mapreduce/ErlangMapReduceOperation.java b/spring-datastore-riak/src/main/java/org/springframework/datastore/riak/mapreduce/ErlangMapReduceOperation.java
index 2c19fa800..0b9583183 100644
--- a/spring-datastore-riak/src/main/java/org/springframework/datastore/riak/mapreduce/ErlangMapReduceOperation.java
+++ b/spring-datastore-riak/src/main/java/org/springframework/datastore/riak/mapreduce/ErlangMapReduceOperation.java
@@ -12,6 +12,14 @@ public class ErlangMapReduceOperation implements MapReduceOperation {
   protected String language = "erlang";
   protected Map moduleFunction = new LinkedHashMap();
 
+  public ErlangMapReduceOperation() {
+  }
+
+  public ErlangMapReduceOperation(String module, String function) {
+    setModule(module);
+    setFunction(function);
+  }
+
   public void setModule(String module) {
     moduleFunction.put("module", module);
   }
diff --git a/spring-datastore-riak/src/main/java/org/springframework/datastore/riak/mapreduce/MapReducePhase.java b/spring-datastore-riak/src/main/java/org/springframework/datastore/riak/mapreduce/MapReducePhase.java
index 681dc27a5..d396ebffa 100644
--- a/spring-datastore-riak/src/main/java/org/springframework/datastore/riak/mapreduce/MapReducePhase.java
+++ b/spring-datastore-riak/src/main/java/org/springframework/datastore/riak/mapreduce/MapReducePhase.java
@@ -21,7 +21,7 @@ package org.springframework.datastore.riak.mapreduce;
  */
 public interface MapReducePhase {
 
-  public enum Phase {
+  public static enum Phase {
     MAP, REDUCE
   }