diff --git a/.github/workflows/publish-to-pypi.yml b/.github/workflows/publish-to-pypi.yml
index db080d5..304887a 100644
--- a/.github/workflows/publish-to-pypi.yml
+++ b/.github/workflows/publish-to-pypi.yml
@@ -17,7 +17,6 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        pip install -r requirements.txt
 
     - name: Run tests
       run: |
diff --git a/Dockerfile b/Dockerfile
index b8f9eae..0136585 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,5 @@ ADD . /config-merger/
 
 RUN apt-get update && apt-get install -y make curl
 
-RUN python -m pip install --upgrade pip && pip3 install -r requirements.txt
-RUN pip3 install .
+RUN python -m pip install --upgrade pip && pip3 install .[extras]
 RUN rm -rf /config-merger/*
diff --git a/MANIFEST.in b/MANIFEST.in
index 997cdc6..e24d9d0 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,3 +1,2 @@
 include README.md
-include requirements.txt
 recursive-include examples *
diff --git a/README.md b/README.md
index eb23e66..2825651 100644
--- a/README.md
+++ b/README.md
@@ -43,6 +43,8 @@ Idea came from puppet's hiera.
 
 ```sh
 pip install himl
+# or, optionally install with extras dependencies: vault and aws interpolation support
+pip install himl[extras]
 ```
 
 ### Using `docker` image
@@ -57,7 +59,7 @@ See all docker tags at: https://github.com/adobe/himl/pkgs/container/himl/versio
 ```
 git clone https://github.com/adobe/himl
 cd himl
-sudo python setup.py install
+sudo python install -e .[extras]
 ```
 
 ## Examples
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 8bbc1a6..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-deepmerge==1.0.1
-lru_cache==0.2.3
-backports.functools_lru_cache==1.6.4
-pathlib2==2.3.7.post1
-boto3==1.22.12
-pyyaml==6.0
-hvac==0.11.2
diff --git a/setup.py b/setup.py
index a786b3b..de10e34 100644
--- a/setup.py
+++ b/setup.py
@@ -9,9 +9,6 @@
 with open('README.md', encoding="utf-8") as f:
     _readme = f.read()
 
-_mydir = os.path.abspath(os.path.dirname(sys.argv[0]))
-_requires = [ r for r in open(os.path.sep.join((_mydir,'requirements.txt')), "r").read().split('\n') if len(r)>1 ]
-
 setup(
     name='himl',
     version="0.9.0",
@@ -46,7 +43,19 @@
     ],
     packages=['himl'],
     include_package_data=True,
-    install_requires=_requires,
+    install_requires=[
+        'deepmerge==1.0.1',
+        'lru_cache==0.2.3',
+        'backports.functools_lru_cache==1.6.4',
+        'pathlib2==2.3.7.post1',
+        'pyyaml==6.0'
+    ],
+    extras_require={
+        'extras': [
+            'boto3==1.22.12',
+            'hvac==0.11.2'
+        ]
+    },
     entry_points={
         'console_scripts': [
             'himl = himl.main:run',