diff --git a/keras_mxnet_ci/nightly-buildspec.yml b/keras_mxnet_ci/nightly-buildspec-python2.yml
similarity index 96%
rename from keras_mxnet_ci/nightly-buildspec.yml
rename to keras_mxnet_ci/nightly-buildspec-python2.yml
index 51089e7d8b3..05388b79e61 100644
--- a/keras_mxnet_ci/nightly-buildspec.yml
+++ b/keras_mxnet_ci/nightly-buildspec-python2.yml
@@ -27,4 +27,4 @@ phases:
       echo "Running PEP tests";
       py.test --pep8 -m pep8 -n0;
       echo "Running Keras Unit Tests and Integration Tests for all the backends";
-      py.test tests/;
\ No newline at end of file
+      python -m pytest tests/;
\ No newline at end of file
diff --git a/keras_mxnet_ci/nightly-buildspec-python3.yml b/keras_mxnet_ci/nightly-buildspec-python3.yml
new file mode 100644
index 00000000000..c3a4ee28330
--- /dev/null
+++ b/keras_mxnet_ci/nightly-buildspec-python3.yml
@@ -0,0 +1,30 @@
+version: 0.2
+
+phases:
+  install:
+    commands:
+      echo "Checking out master branch";
+      git fetch;
+      git checkout master;
+      echo "Installing MXNet";
+      apt-get update;
+      sudo apt install -y python3-pip;
+      pip3 install mxnet --pre;
+      echo "Installing Tensorflow";
+      pip3 install tensorflow;
+      echo "Installing Theano";
+      pip3 install theano;
+      pip3 install pillow;
+      sudo apt-get -y install graphviz;
+      pip3 install --upgrade graphviz;
+      pip3 install pydot;
+      pip3 install nose;
+      echo "Installing Keras from source";
+      pip3 install -e .[visualize,tests];
+
+  build:
+    commands:
+      echo "Running PEP tests";
+      py.test --pep8 -m pep8 -n0;
+      echo "Running Keras Unit Tests and Integration Tests for all the backends";
+      python3 -m pytest tests/;
\ No newline at end of file
diff --git a/keras_mxnet_ci/pr-buildspec.yml b/keras_mxnet_ci/pr-buildspec-python2.yml
similarity index 96%
rename from keras_mxnet_ci/pr-buildspec.yml
rename to keras_mxnet_ci/pr-buildspec-python2.yml
index 58d8f9f636a..c48d65c693e 100644
--- a/keras_mxnet_ci/pr-buildspec.yml
+++ b/keras_mxnet_ci/pr-buildspec-python2.yml
@@ -29,4 +29,4 @@ phases:
       echo "Running PEP tests";
       py.test --pep8 -m pep8 -n0;
       echo "Running Keras Unit Tests and Integration Tests for all the backends";
-      py.test tests/;
+      python -m pytest tests/;
\ No newline at end of file
diff --git a/keras_mxnet_ci/pr-buildspec-python3.yml b/keras_mxnet_ci/pr-buildspec-python3.yml
new file mode 100644
index 00000000000..d3c97fa14de
--- /dev/null
+++ b/keras_mxnet_ci/pr-buildspec-python3.yml
@@ -0,0 +1,32 @@
+version: 0.2
+
+phases:
+  install:
+    commands:
+      echo $CODEBUILD_SOURCE_VERSION;
+      PRID=$(echo $CODEBUILD_SOURCE_VERSION | sed "s/pr/pull/g");
+      echo "Checking out $PRID";
+      git fetch origin $PRID/head:pr_test;
+      git checkout pr_test;
+      echo "Installing MXNet";
+      apt-get update;
+      sudo apt install -y python3-pip;
+      pip3 install mxnet --pre;
+      echo "Installing Tensorflow";
+      pip3 install tensorflow;
+      echo "Installing Theano";
+      pip3 install theano;
+      pip3 install pillow;
+      sudo apt-get -y install graphviz;
+      pip3 install --upgrade graphviz;
+      pip3 install pydot;
+      pip3 install nose;
+      echo "Installing Keras from source";
+      pip3 install -e .[visualize,tests];
+
+  build:
+    commands:
+      echo "Running PEP tests";
+      py.test --pep8 -m pep8 -n0;
+      echo "Running Keras Unit Tests and Integration Tests for all the backends";
+      python3 -m pytest tests/;
\ No newline at end of file