diff --git a/pom.xml b/pom.xml
index f02800d9e..de9b54e84 100644
--- a/pom.xml
+++ b/pom.xml
@@ -297,14 +297,14 @@
         <numpy.version>1.18.1</numpy.version>
         <numpy.javacpp.version>${numpy.version}-${javacpp-presets.version}</numpy.javacpp.version>
 
-        <openblas.version>0.3.7</openblas.version>
+        <openblas.version>0.3.9</openblas.version>
         <mkl.version>2020.0</mkl.version>
         <opencv.version>4.2.0</opencv.version>
         <ffmpeg.version>4.2.2</ffmpeg.version>
         <leptonica.version>1.79.0</leptonica.version>
-        <hdf5.version>1.10.6</hdf5.version>
+        <hdf5.version>1.12.0</hdf5.version>
         <ale.version>0.6.1</ale.version>
-        <gym.version>0.15.5</gym.version>
+        <gym.version>0.17.1</gym.version>
         <tensorflow.version>1.15.2</tensorflow.version>
         <tensorflow.javacpp.version>${tensorflow.version}-${javacpp-presets.version}</tensorflow.javacpp.version>
 
diff --git a/rl4j/rl4j-gym/src/main/java/org/deeplearning4j/rl4j/mdp/gym/GymEnv.java b/rl4j/rl4j-gym/src/main/java/org/deeplearning4j/rl4j/mdp/gym/GymEnv.java
index afeea5f7c..8a402a8ff 100644
--- a/rl4j/rl4j-gym/src/main/java/org/deeplearning4j/rl4j/mdp/gym/GymEnv.java
+++ b/rl4j/rl4j-gym/src/main/java/org/deeplearning4j/rl4j/mdp/gym/GymEnv.java
@@ -62,7 +62,7 @@ public class GymEnv<O, A, AS extends ActionSpace<A>> implements MDP<O, A, AS> {
     private static PyObject globals;
     static {
         try {
-            Py_SetPath(org.bytedeco.gym.presets.gym.cachePackages());
+            Py_AddPath(org.bytedeco.gym.presets.gym.cachePackages());
             program = Py_DecodeLocale(GymEnv.class.getSimpleName(), null);
             Py_SetProgramName(program);
             Py_Initialize();