diff --git a/.yamato/test_versions.metafile b/.yamato/test_versions.metafile
index 187477ee36..a0daff2524 100644
--- a/.yamato/test_versions.metafile
+++ b/.yamato/test_versions.metafile
@@ -1,7 +1,14 @@
 # List of editor versions for standalone-build-test and its dependencies.
+# csharp_backcompat_version is used in training-int-tests to determine the
+# older package version to run the backwards compat tests against.
 test_editors:
   - version: 2018.4
+    csharp_backcompat_version: 1.0.0
   - version: 2019.4
+    csharp_backcompat_version: 1.0.0
   - version: 2020.1
-# Waiting on a barracuda fix, see https://jira.unity3d.com/browse/MLA-1464
-#  - version: 2020.2
+    csharp_backcompat_version: 1.0.0
+  - version: 2020.2
+    # 2020.2 moved the AssetImporters namespace
+    # but we didn't handle this until 1.2.0
+    csharp_backcompat_version: 1.2.0
diff --git a/.yamato/training-int-tests.yml b/.yamato/training-int-tests.yml
index f4b1c5d217..87c10bf64e 100644
--- a/.yamato/training-int-tests.yml
+++ b/.yamato/training-int-tests.yml
@@ -19,7 +19,7 @@ test_mac_training_int_{{ editor.version }}:
     # If we make a breaking change to the communication protocol, these will need
     # to be disabled until the next release.
     - python -u -m ml-agents.tests.yamato.training_int_tests --python=0.16.0
-    - python -u -m ml-agents.tests.yamato.training_int_tests --csharp=1.0.0
+    - python -u -m ml-agents.tests.yamato.training_int_tests --csharp={{ editor.csharp_backcompat_version }}
   dependencies:
     - .yamato/standalone-build-test.yml#test_mac_standalone_{{ editor.version }}
   triggers:
diff --git a/com.unity.ml-agents/CHANGELOG.md b/com.unity.ml-agents/CHANGELOG.md
index 3cce0ea8ec..c6e1e89d07 100755
--- a/com.unity.ml-agents/CHANGELOG.md
+++ b/com.unity.ml-agents/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to
 
 ### Minor Changes
 #### com.unity.ml-agents (C#)
+- The Barracuda dependency was upgraded to 1.1.2 (#4571)
 #### ml-agents / ml-agents-envs / gym-unity (Python)
 
 ### Bug Fixes
diff --git a/com.unity.ml-agents/package.json b/com.unity.ml-agents/package.json
index 8ab674d1d1..245597bd75 100755
--- a/com.unity.ml-agents/package.json
+++ b/com.unity.ml-agents/package.json
@@ -5,7 +5,7 @@
   "unity": "2018.4",
   "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": "1.1.1-preview",
+    "com.unity.barracuda": "1.1.2-preview",
     "com.unity.modules.imageconversion": "1.0.0",
     "com.unity.modules.jsonserialize": "1.0.0",
     "com.unity.modules.physics": "1.0.0",
diff --git a/ml-agents/tests/yamato/yamato_utils.py b/ml-agents/tests/yamato/yamato_utils.py
index 17bb0104f3..ad61223eb4 100644
--- a/ml-agents/tests/yamato/yamato_utils.py
+++ b/ml-agents/tests/yamato/yamato_utils.py
@@ -150,10 +150,11 @@ def checkout_csharp_version(csharp_version):
         return
 
     csharp_tag = f"com.unity.ml-agents_{csharp_version}"
-    csharp_dirs = ["com.unity.ml-agents", "Project"]
+    csharp_dirs = ["com.unity.ml-agents", "com.unity.ml-agents.extensions", "Project"]
     for csharp_dir in csharp_dirs:
         subprocess.check_call(f"rm -rf {csharp_dir}", shell=True)
-        subprocess.check_call(f"git checkout {csharp_tag} -- {csharp_dir}", shell=True)
+        # Allow the checkout to fail, since the extensions folder isn't availabe in 1.0.0
+        subprocess.call(f"git checkout {csharp_tag} -- {csharp_dir}", shell=True)
 
 
 def undo_git_checkout():