diff --git a/build.sbt b/build.sbt
index 9776fda..ec54104 100644
--- a/build.sbt
+++ b/build.sbt
@@ -50,7 +50,7 @@
 
 name := "apache-predictionio-parent"
 
-version in ThisBuild := "0.13.0-SNAPSHOT"
+version in ThisBuild := "0.12.1"
 
 organization in ThisBuild := "org.apache.predictionio"
 
diff --git a/examples/scala-parallel-classification/add-algorithm/build.sbt b/examples/scala-parallel-classification/add-algorithm/build.sbt
index aef4495..703b5be 100644
--- a/examples/scala-parallel-classification/add-algorithm/build.sbt
+++ b/examples/scala-parallel-classification/add-algorithm/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/examples/scala-parallel-classification/reading-custom-properties/build.sbt b/examples/scala-parallel-classification/reading-custom-properties/build.sbt
index aef4495..703b5be 100644
--- a/examples/scala-parallel-classification/reading-custom-properties/build.sbt
+++ b/examples/scala-parallel-classification/reading-custom-properties/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/examples/scala-parallel-ecommercerecommendation/adjust-score/build.sbt b/examples/scala-parallel-ecommercerecommendation/adjust-score/build.sbt
index f5dc7e5..e45e277 100644
--- a/examples/scala-parallel-ecommercerecommendation/adjust-score/build.sbt
+++ b/examples/scala-parallel-ecommercerecommendation/adjust-score/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/examples/scala-parallel-ecommercerecommendation/train-with-rate-event/build.sbt b/examples/scala-parallel-ecommercerecommendation/train-with-rate-event/build.sbt
index f5dc7e5..e45e277 100644
--- a/examples/scala-parallel-ecommercerecommendation/train-with-rate-event/build.sbt
+++ b/examples/scala-parallel-ecommercerecommendation/train-with-rate-event/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/examples/scala-parallel-recommendation/blacklist-items/build.sbt b/examples/scala-parallel-recommendation/blacklist-items/build.sbt
index 1c38229..0251958 100644
--- a/examples/scala-parallel-recommendation/blacklist-items/build.sbt
+++ b/examples/scala-parallel-recommendation/blacklist-items/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
\ No newline at end of file
diff --git a/examples/scala-parallel-recommendation/customize-data-prep/build.sbt b/examples/scala-parallel-recommendation/customize-data-prep/build.sbt
index 1c38229..0251958 100644
--- a/examples/scala-parallel-recommendation/customize-data-prep/build.sbt
+++ b/examples/scala-parallel-recommendation/customize-data-prep/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
\ No newline at end of file
diff --git a/examples/scala-parallel-recommendation/customize-serving/build.sbt b/examples/scala-parallel-recommendation/customize-serving/build.sbt
index 1c38229..0251958 100644
--- a/examples/scala-parallel-recommendation/customize-serving/build.sbt
+++ b/examples/scala-parallel-recommendation/customize-serving/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
\ No newline at end of file
diff --git a/examples/scala-parallel-recommendation/reading-custom-events/build.sbt b/examples/scala-parallel-recommendation/reading-custom-events/build.sbt
index 1c38229..0251958 100644
--- a/examples/scala-parallel-recommendation/reading-custom-events/build.sbt
+++ b/examples/scala-parallel-recommendation/reading-custom-events/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
\ No newline at end of file
diff --git a/examples/scala-parallel-recommendation/train-with-view-event/build.sbt b/examples/scala-parallel-recommendation/train-with-view-event/build.sbt
index 1c38229..0251958 100644
--- a/examples/scala-parallel-recommendation/train-with-view-event/build.sbt
+++ b/examples/scala-parallel-recommendation/train-with-view-event/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
\ No newline at end of file
diff --git a/examples/scala-parallel-similarproduct/multi-events-multi-algos/build.sbt b/examples/scala-parallel-similarproduct/multi-events-multi-algos/build.sbt
index 9d7c345..c03fd46 100644
--- a/examples/scala-parallel-similarproduct/multi-events-multi-algos/build.sbt
+++ b/examples/scala-parallel-similarproduct/multi-events-multi-algos/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/examples/scala-parallel-similarproduct/recommended-user/build.sbt b/examples/scala-parallel-similarproduct/recommended-user/build.sbt
index a233b8b..d40f4f0 100644
--- a/examples/scala-parallel-similarproduct/recommended-user/build.sbt
+++ b/examples/scala-parallel-similarproduct/recommended-user/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/examples/scala-parallel-similarproduct/return-item-properties/build.sbt b/examples/scala-parallel-similarproduct/return-item-properties/build.sbt
index 9d7c345..c03fd46 100644
--- a/examples/scala-parallel-similarproduct/return-item-properties/build.sbt
+++ b/examples/scala-parallel-similarproduct/return-item-properties/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/examples/scala-parallel-similarproduct/rid-user-set-event/build.sbt b/examples/scala-parallel-similarproduct/rid-user-set-event/build.sbt
index 9d7c345..c03fd46 100644
--- a/examples/scala-parallel-similarproduct/rid-user-set-event/build.sbt
+++ b/examples/scala-parallel-similarproduct/rid-user-set-event/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/examples/scala-parallel-similarproduct/train-with-rate-event/build.sbt b/examples/scala-parallel-similarproduct/train-with-rate-event/build.sbt
index 9d7c345..c03fd46 100644
--- a/examples/scala-parallel-similarproduct/train-with-rate-event/build.sbt
+++ b/examples/scala-parallel-similarproduct/train-with-rate-event/build.sbt
@@ -20,5 +20,5 @@
 organization := "org.apache.predictionio"
 scalaVersion := "2.11.8"
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.0-incubating" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-mllib"              % "2.1.1" % "provided")
diff --git a/tests/pio_tests/engines/recommendation-engine/build.sbt b/tests/pio_tests/engines/recommendation-engine/build.sbt
index 4cf483d..798995c 100644
--- a/tests/pio_tests/engines/recommendation-engine/build.sbt
+++ b/tests/pio_tests/engines/recommendation-engine/build.sbt
@@ -26,6 +26,6 @@
 organization := "org.apache.predictionio"
 
 libraryDependencies ++= Seq(
-  "org.apache.predictionio" %% "apache-predictionio-core" % "0.13.0-SNAPSHOT" % "provided",
+  "org.apache.predictionio" %% "apache-predictionio-core" % "0.12.1" % "provided",
   "org.apache.spark"        %% "spark-core"    % sys.env.getOrElse("PIO_SPARK_VERSION", "2.1.1") % "provided",
   "org.apache.spark"        %% "spark-mllib"   % sys.env.getOrElse("PIO_SPARK_VERSION", "2.1.1") % "provided")