diff --git a/.appveyor.yml b/.appveyor.yml
index 5a96546ad..808e7951a 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -60,7 +60,7 @@ for:
 
     # setup go
     - rmdir c:\go /s /q
-    - "choco install golang"
+    - "choco install golang --version 1.15.7"
     - "choco install bzr"
     - "choco install dep"
     - setx PATH "C:\go\bin;C:\gopath\bin;C:\Program Files (x86)\Bazaar\;C:\Program Files\Mercurial;%PATH%;"
diff --git a/aws_lambda_builders/__init__.py b/aws_lambda_builders/__init__.py
index 32b058c3a..27fb27380 100644
--- a/aws_lambda_builders/__init__.py
+++ b/aws_lambda_builders/__init__.py
@@ -1,5 +1,5 @@
 """
 AWS Lambda Builder Library
 """
-__version__ = "1.2.0"
+__version__ = "1.3.0"
 RPC_PROTOCOL_VERSION = "0.3"
diff --git a/aws_lambda_builders/workflows/python_pip/compat.py b/aws_lambda_builders/workflows/python_pip/compat.py
index 51389b7d0..9e83494e4 100644
--- a/aws_lambda_builders/workflows/python_pip/compat.py
+++ b/aws_lambda_builders/workflows/python_pip/compat.py
@@ -7,7 +7,7 @@
 def pip_import_string(python_exe):
     os_utils = OSUtils()
     cmd = [python_exe, "-c", "import pip; print(pip.__version__)"]
-    p = os_utils.popen(cmd, stdout=os_utils.pipe, stderr=os_utils.pipe)
+    p = os_utils.popen(cmd, stdout=os_utils.pipe, stderr=os_utils.pipe, env=os_utils.original_environ())
     stdout, stderr = p.communicate()
     if not p.returncode == 0:
         raise MissingPipError(python_path=python_exe)
diff --git a/aws_lambda_builders/workflows/python_pip/packager.py b/aws_lambda_builders/workflows/python_pip/packager.py
index 17cde15bd..241b49630 100644
--- a/aws_lambda_builders/workflows/python_pip/packager.py
+++ b/aws_lambda_builders/workflows/python_pip/packager.py
@@ -494,7 +494,9 @@ def _generate_egg_info(self, package_dir):
         cmd = [sys.executable, "-c", script, "--no-user-cfg", "egg_info", "--egg-base", "egg-info"]
         egg_info_dir = self._osutils.joinpath(package_dir, "egg-info")
         self._osutils.makedirs(egg_info_dir)
-        p = subprocess.Popen(cmd, cwd=package_dir, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        p = subprocess.Popen(
+            cmd, cwd=package_dir, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=self._osutils.original_environ()
+        )
         p.communicate()
         info_contents = self._osutils.get_directory_contents(egg_info_dir)
         pkg_info_path = self._osutils.joinpath(egg_info_dir, info_contents[0], "PKG-INFO")
@@ -535,7 +537,7 @@ def __init__(self, osutils=None, python_exe=None, import_string=None):
 
     def main(self, args, env_vars=None, shim=None):
         if env_vars is None:
-            env_vars = self._osutils.environ()
+            env_vars = self._osutils.original_environ()
         if shim is None:
             shim = ""
         run_pip = ("import sys; %s; sys.exit(main(%s))") % (self._import_string, args)
diff --git a/aws_lambda_builders/workflows/python_pip/utils.py b/aws_lambda_builders/workflows/python_pip/utils.py
index 6c5afc73a..eab58bda4 100644
--- a/aws_lambda_builders/workflows/python_pip/utils.py
+++ b/aws_lambda_builders/workflows/python_pip/utils.py
@@ -10,12 +10,29 @@
 import shutil
 import tarfile
 import subprocess
+import sys
 
 
 class OSUtils(object):
     def environ(self):
         return os.environ
 
+    def original_environ(self):
+        # https://pyinstaller.readthedocs.io/en/stable/runtime-information.html#ld-library-path-libpath-considerations
+        env = dict(os.environ)
+        # Check whether running as a PyInstaller binary
+        if getattr(sys, "frozen", False) and hasattr(sys, "_MEIPASS"):
+            lp_key = "LD_LIBRARY_PATH"
+            original_lp = env.get(lp_key + "_ORIG")
+            if original_lp is not None:
+                env[lp_key] = original_lp
+            else:
+                # This happens when LD_LIBRARY_PATH was not set.
+                # Remove the env var as a last resort:
+                env.pop(lp_key, None)
+
+        return env
+
     def file_exists(self, filename):
         return os.path.isfile(filename)
 
diff --git a/aws_lambda_builders/workflows/python_pip/validator.py b/aws_lambda_builders/workflows/python_pip/validator.py
index f0a1c06b1..0032181a1 100644
--- a/aws_lambda_builders/workflows/python_pip/validator.py
+++ b/aws_lambda_builders/workflows/python_pip/validator.py
@@ -7,6 +7,7 @@
 import subprocess
 
 from aws_lambda_builders.exceptions import MisMatchRuntimeError
+from .utils import OSUtils
 
 LOG = logging.getLogger(__name__)
 
@@ -39,7 +40,9 @@ def validate(self, runtime_path):
 
         cmd = self._validate_python_cmd(runtime_path)
 
-        p = subprocess.Popen(cmd, cwd=os.getcwd(), stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+        p = subprocess.Popen(
+            cmd, cwd=os.getcwd(), stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=OSUtils().original_environ()
+        )
         p.communicate()
         if p.returncode != 0:
             raise MisMatchRuntimeError(language=self.language, required_runtime=self.runtime, runtime_path=runtime_path)
diff --git a/aws_lambda_builders/workflows/python_pip/workflow.py b/aws_lambda_builders/workflows/python_pip/workflow.py
index f623d03cc..2ed5c0976 100644
--- a/aws_lambda_builders/workflows/python_pip/workflow.py
+++ b/aws_lambda_builders/workflows/python_pip/workflow.py
@@ -20,6 +20,7 @@ class PythonPipWorkflow(BaseWorkflow):
         ".aws-sam",
         ".chalice",
         ".git",
+        ".gitignore",
         # Compiled files
         "*.pyc",
         "__pycache__",
@@ -51,6 +52,7 @@ class PythonPipWorkflow(BaseWorkflow):
         "venv.bak",
         "env.bak",
         "ENV",
+        "env",
         # Editors
         # TODO: Move the commonly ignored files to base class
         ".vscode",