diff --git a/DevProject/Packages/packages-lock.json b/DevProject/Packages/packages-lock.json
index dab9dbe948..8819fa0ef5 100644
--- a/DevProject/Packages/packages-lock.json
+++ b/DevProject/Packages/packages-lock.json
@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "com.unity.barracuda": {
-      "version": "2.0.0-pre.3",
+      "version": "2.3.1-preview",
       "depth": 1,
       "source": "registry",
       "dependencies": {
@@ -55,7 +55,7 @@
       "depth": 0,
       "source": "local",
       "dependencies": {
-        "com.unity.barracuda": "2.0.0-pre.3",
+        "com.unity.barracuda": "2.3.1-preview",
         "com.unity.modules.imageconversion": "1.0.0",
         "com.unity.modules.jsonserialize": "1.0.0"
       }
diff --git a/Project/Packages/packages-lock.json b/Project/Packages/packages-lock.json
index 7576145879..e9463eb98e 100644
--- a/Project/Packages/packages-lock.json
+++ b/Project/Packages/packages-lock.json
@@ -1,7 +1,7 @@
 {
   "dependencies": {
     "com.unity.barracuda": {
-      "version": "2.0.0-pre.3",
+      "version": "2.3.1-preview",
       "depth": 1,
       "source": "registry",
       "dependencies": {
@@ -53,7 +53,7 @@
       "depth": 0,
       "source": "local",
       "dependencies": {
-        "com.unity.barracuda": "2.0.0-pre.3",
+        "com.unity.barracuda": "2.3.1-preview",
         "com.unity.modules.imageconversion": "1.0.0",
         "com.unity.modules.jsonserialize": "1.0.0"
       }
diff --git a/com.unity.ml-agents/CHANGELOG.md b/com.unity.ml-agents/CHANGELOG.md
index dab7cb200f..ad371b1023 100755
--- a/com.unity.ml-agents/CHANGELOG.md
+++ b/com.unity.ml-agents/CHANGELOG.md
@@ -11,6 +11,7 @@ and this project adheres to
 
 #### com.unity.ml-agents / com.unity.ml-agents.extensions (C#)
 - Added a new feature to replicate training areas dynamically during runtime. (#5568)
+- Update Barracuda to 2.3.1-preview
 
 #### ml-agents / ml-agents-envs / gym-unity (Python)
 
diff --git a/com.unity.ml-agents/package.json b/com.unity.ml-agents/package.json
index d97716dbe7..fb3b4d2e98 100755
--- a/com.unity.ml-agents/package.json
+++ b/com.unity.ml-agents/package.json
@@ -5,7 +5,7 @@
   "unity": "2019.4",
   "description": "Use state-of-the-art machine learning to create intelligent character behaviors in any Unity environment (games, robotics, film, etc.).",
   "dependencies": {
-    "com.unity.barracuda": "2.0.0-pre.3",
+    "com.unity.barracuda": "2.3.1-preview",
     "com.unity.modules.imageconversion": "1.0.0",
     "com.unity.modules.jsonserialize": "1.0.0"
   }