diff --git a/README.md b/README.md
index e5f192a..cee39a2 100644
--- a/README.md
+++ b/README.md
@@ -87,9 +87,16 @@ bazel test -c opt $BAZEL_FLAGS nucleus/...
 
 ## Version
 
-This is Nucleus 0.5.2.  Nucleus follows [semantic
+This is Nucleus 0.5.3.  Nucleus follows [semantic
 versioning](https://semver.org/).
 
+New in 0.5.3:
+
+* Fixes memory leaks in message_module.cc.
+* Updates setup.py to install .egg-info directory for pip 20.2+ compatibility.
+* Pins TensorFlow to 2.0.0 for protobuf version compatibility.
+* Pins setuptools to 49.6.0 to avoid breaking changes of setuptools 50.
+
 New in 0.5.2:
 
 * Upgrades htslib dependency from 1.9 to 1.10.2.
diff --git a/docs/source/nucleus/pip_package/setup.md b/docs/source/nucleus/pip_package/setup.md
index 59259d4..45889e2 100644
--- a/docs/source/nucleus/pip_package/setup.md
+++ b/docs/source/nucleus/pip_package/setup.md
@@ -22,13 +22,34 @@ Instead, we directly implement the four commands run by pip install
   * setup.py clean
 
 ## Functions overview
-Name | Description
------|------------
-[`find_destination`](#find_destination)`(is_user)` | Returns the directory we are supposed to install into.
-[`main`](#main)`()` | 
-[`touch`](#touch)`(fname)` | 
+
+| Name                                               | Description           |
+| -------------------------------------------------- | --------------------- |
+| [`copy_egg_info`](#copy_egg_info)`(dest_dir)`      | Copies the .egg-info  |
+:                                                    : directory to the      :
+:                                                    : specified location.   :
+| [`find_destination`](#find_destination)`(is_user)` | Returns the directory |
+:                                                    : we are supposed to    :
+:                                                    : install into.         :
+| [`main`](#main)`()`                                |                       |
+| [`touch`](#touch)`(fname)`                         |                       |
 
 ## Functions
+
+<a name="copy_egg_info"></a>
+
+### `copy_egg_info(dest_dir)`
+
+```
+Copies the .egg-info directory to the specified location.
+
+Args:
+  dest_dir: str. The destination directory.
+
+Returns:
+  0 on success, 1 on failure.
+```
+
 <a name="find_destination"></a>
 ### `find_destination(is_user)`
 ```
diff --git a/nucleus/pip_package/build_pip_package.sh b/nucleus/pip_package/build_pip_package.sh
index 60a303e..bc0074a 100755
--- a/nucleus/pip_package/build_pip_package.sh
+++ b/nucleus/pip_package/build_pip_package.sh
@@ -28,7 +28,7 @@ set -x
 
 # When changing NUCLEUS_VERSION, be sure to also change it in
 # egg_files/PKG-INFO.
-NUCLEUS_VERSION="0.5.2"
+NUCLEUS_VERSION="0.5.3"
 PACKAGE_NAME="google_nucleus-${NUCLEUS_VERSION}"
 PYTHON_VERSION="3.5"
 
diff --git a/nucleus/pip_package/egg_files/PKG-INFO b/nucleus/pip_package/egg_files/PKG-INFO
index cd5b875..36d79b0 100644
--- a/nucleus/pip_package/egg_files/PKG-INFO
+++ b/nucleus/pip_package/egg_files/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 1.1
 Name: google-nucleus
-Version: 0.5.2
+Version: 0.5.3
 Summary: A library for reading and writing genomics data.
 Home-page: https://github.com/google/nucleus
 Author: The Genomics team in Google Brain