diff --git a/.travis.yml b/.travis.yml
index 61320ef..0db06ef 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,6 @@
 language: python
 python:
+- 3.7
 - 3.8
 before_install:
 - pip install poetry
diff --git a/README.md b/README.md
index e710a8c..d0a5527 100644
--- a/README.md
+++ b/README.md
@@ -19,7 +19,7 @@ The NiaAML framework allows you not only to run full pipeline optimization, but
 
 * **Free software:** MIT license
 * **Documentation:** https://niaaml.readthedocs.io/en/latest/
-* **Python versions:** 3.8.x
+* **Python versions:** 3.7.x, 3.8.x
 
 ## Installation
 
diff --git a/niaaml/__init__.py b/niaaml/__init__.py
index 6c29d5f..6ae147c 100644
--- a/niaaml/__init__.py
+++ b/niaaml/__init__.py
@@ -27,4 +27,4 @@
 ]
 
 __project__ = 'niaaml'
-__version__ = '0.1.2'
+__version__ = '0.1.3a1'
diff --git a/pyproject.toml b/pyproject.toml
index 865798b..f9d6e44 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "NiaAML"
-version = "0.1.2"
+version = "0.1.3a1"
 description = "Python automated machine learning framework."
 license = "MIT"
 authors = ["Luka Pečnik <lukapecnik96@gmail.com>", "Iztok Fister Jr. <iztok.fister1@um.si>"]
@@ -14,7 +14,7 @@ include = [
 ]
 
 [tool.poetry.dependencies]
-python = "^3.8"
+python = "^3.7"
 numpy = "^1.19.1"
 scikit-learn = "^0.23.2"
 NiaPy = "^2.0.0rc11"