diff --git a/CPU_Container.dockerfile b/CPU_Container.dockerfile
index 5efa8627c..b81f5fccb 100644
--- a/CPU_Container.dockerfile
+++ b/CPU_Container.dockerfile
@@ -9,7 +9,7 @@ ARG DEBIAN_FRONTEND=noninteractive
 ENV TZ=America/New_York
 
 # --build-arg mcsversion=0.0.x to override default in docker build command
-ARG mcsversion=0.4.1
+ARG mcsversion=0.4.1.1
 
 ENV DEBIAN_FRONTEND=noninteractive
 ENV MCS_EXECUTABLE_PATH="/MCS-AI2-THOR-Unity-App-v${mcsversion}.x86_64"
diff --git a/Dockerfile b/Dockerfile
index 7b86efb73..3c58da691 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,7 @@ ENV NVIDIA_DRIVER_CAPABILITIES ${NVIDIA_DRIVER_CAPABILITIES},display
 # ENV LANG C.UTF-8
 
 # --build-arg mcsversion=0.0.x to override default in docker build command
-ARG mcsversion=0.4.1
+ARG mcsversion=0.4.1.1
 
 WORKDIR /mcs
 
diff --git a/README.md b/README.md
index 60a652ba1..a794006f8 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@
 
 ## Installation
 
-The latest release of the MCS Python library is `0.4.1`.
+The latest release of the MCS Python library is `0.4.1.1`.
 
 ### Virtual Environments
 
@@ -65,33 +65,33 @@ Here are the instructions for downloading and installing our latest Unity releas
 
 ### Unity Application
 
-The latest release of the MCS Unity app is `0.4.1`.
+The latest release of the MCS Unity app is `0.4.1.1`.
 
 Please note that our Unity App is built on Linux or Mac.
 
 Linux Version:
 
-1. [Download the Latest MCS Unity App](https://github.com/NextCenturyCorporation/MCS/releases/download/0.4.1/MCS-AI2-THOR-Unity-App-v0.4.1.x86_64)
+1. [Download the Latest MCS Unity App](https://github.com/NextCenturyCorporation/MCS/releases/download/0.4.1.1/MCS-AI2-THOR-Unity-App-v0.4.1.1.x86_64)
 
-2. [Download the Latest MCS Unity Data Directory TAR](https://github.com/NextCenturyCorporation/MCS/releases/download/0.4.1/MCS-AI2-THOR-Unity-App-v0.4.1_Data.tar.gz)
+2. [Download the Latest MCS Unity Data Directory TAR](https://github.com/NextCenturyCorporation/MCS/releases/download/0.4.1.1/MCS-AI2-THOR-Unity-App-v0.4.1.1_Data.tar.gz)
 
 3. Ensure that both the Unity App and the TAR are in the same directory.
 
 4. Untar the Data Directory:
 
 ```
-tar -xzvf MCS-AI2-THOR-Unity-App-v0.4.1_Data.tar.gz
+tar -xzvf MCS-AI2-THOR-Unity-App-v0.4.1.1_Data.tar.gz
 ```
 
 5. Mark the Unity App as executable:
 
 ```
-chmod a+x MCS-AI2-THOR-Unity-App-v0.4.1.x86_64
+chmod a+x MCS-AI2-THOR-Unity-App-v0.4.1.1.x86_64
 ```
 
 Mac Version:
 
-[Download the Mac ZIP](https://github.com/NextCenturyCorporation/MCS/releases/download/0.4.1/MCS-AI2-THOR-Unity-App-v0.4.1.app.zip)
+[Download the Mac ZIP](https://github.com/NextCenturyCorporation/MCS/releases/download/0.4.1.1/MCS-AI2-THOR-Unity-App-v0.4.1.1.app.zip)
 
 
 ## Training Datasets
diff --git a/machine_common_sense/_version.py b/machine_common_sense/_version.py
index f0ede3d37..512ce8919 100644
--- a/machine_common_sense/_version.py
+++ b/machine_common_sense/_version.py
@@ -1 +1 @@
-__version__ = '0.4.1'
+__version__ = '0.4.1.1'