diff --git a/.github/workflows/python-publish.yml b/.github/workflows/python-publish.yml
index 4e1ef42..495e3c3 100644
--- a/.github/workflows/python-publish.yml
+++ b/.github/workflows/python-publish.yml
@@ -1,5 +1,5 @@
 # This workflows will upload a Python Package using Twine when a release is created
-# For more information see: https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries
+# For more information see https://help.github.com/en/actions/language-and-framework-guides/using-python-with-github-actions#publishing-to-package-registries
 
 name: Upload Python Package
 
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index cc6cf9d..d66144a 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -9,15 +9,26 @@ jobs:
 
     steps:
     - uses: actions/checkout@v2
+
     - name: Set up Python
       uses: actions/setup-python@v2
       with:
         python-version: '3.x'
-    - name: Install dependencies
+
+    - uses: actions/cache@v1
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-pip-${{ hashFiles('**/dev-requirements.txt') }}
+        restore-keys: |
+          ${{ runner.os }}-pip-
+
+    - name: Install Dependencies
+      if: steps.cache.outputs.cache-hit != 'true'
       run: |
-        python -m pip install -U pip
-        python -m pip install -r dev-requirements.txt
+        pip install -r dev-requirements.txt
+
     - name: Linter
       run: make lint
+
     - name: Test
       run: make test
diff --git a/dev-requirements.txt b/dev-requirements.txt
index 259022d..0226baf 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -4,3 +4,4 @@ flake8
 autopep8
 sympy
 numpy
+scipy
diff --git a/mathgenerator/funcs/__init__.py b/mathgenerator/funcs/__init__.py
index b76db90..be02113 100644
--- a/mathgenerator/funcs/__init__.py
+++ b/mathgenerator/funcs/__init__.py
@@ -94,4 +94,5 @@ from .degree_to_rad import *
 from .radian_to_deg import *
 from .differentiation import *
 from .definite_integral import *
+from .is_prime import *
 from .curvedSurfaceAreaCylinderFunc import *
diff --git a/mathgenerator/funcs/decimal_to_roman_numerals.py b/mathgenerator/funcs/decimal_to_roman_numerals.py
index 46a1ebd..63b64f2 100644
--- a/mathgenerator/funcs/decimal_to_roman_numerals.py
+++ b/mathgenerator/funcs/decimal_to_roman_numerals.py
@@ -15,7 +15,7 @@ def decimalToRomanNumeralsFunc(maxDecimal=4000):
         if last_value <= 3:
             solution += (roman_dict[divisor] * last_value)
         elif last_value == 4:
-            solution += (roman_dict[divisor] * roman_dict[divisor * 5])
+            solution += (roman_dict[divisor] + roman_dict[divisor * 5])
         elif 5 <= last_value <= 8:
             solution += (roman_dict[divisor * 5] + (roman_dict[divisor] * (last_value - 5)))
         elif last_value == 9:
diff --git a/mathgenerator/funcs/definite_integral.py b/mathgenerator/funcs/definite_integral.py
index 9dc6290..6e8453f 100644
--- a/mathgenerator/funcs/definite_integral.py
+++ b/mathgenerator/funcs/definite_integral.py
@@ -1,4 +1,5 @@
 from .__init__ import *
+import scipy
 from scipy.integrate import quad
 
 
diff --git a/mathgenerator/funcs/is_prime.py b/mathgenerator/funcs/is_prime.py
new file mode 100644
index 0000000..143f4d3
--- /dev/null
+++ b/mathgenerator/funcs/is_prime.py
@@ -0,0 +1,22 @@
+from .__init__ import *
+
+
+def isprime(max_a=100):
+    a = random.randint(2, max_a)
+    problem = a
+    if a == 2:
+        solution = True
+        return (problem, solution)
+    if a % 2 == 0:
+        solution = False
+        return (problem, solution)
+    for i in range(3, a // 2 + 1, 2):
+        if a % i == 0:
+            solution = False
+            return (problem, solution)
+    solution = True
+    return (problem, solution)
+
+
+is_prime = Generator('isprime', 90, 'a any positive integer',
+                     'True/False', isprime)
diff --git a/mathgenerator/mathgen.py b/mathgenerator/mathgen.py
index b724345..2a969fa 100644
--- a/mathgenerator/mathgen.py
+++ b/mathgenerator/mathgen.py
@@ -1,9 +1,6 @@
-import random
-import math
-import fractions
 from .funcs import *
 from .__init__ import getGenList
-import scipy
+
 
 genList = getGenList()
 
diff --git a/setup.py b/setup.py
index 4bfbcd0..7b022b4 100644
--- a/setup.py
+++ b/setup.py
@@ -1,12 +1,16 @@
 from setuptools import setup, find_packages
 
 setup(name='mathgenerator',
-      version='1.1.3',
+      version='1.1.4',
       description='An open source solution for generating math problems',
       url='https://github.com/todarith/mathgenerator',
       author='Luke Weiler',
       author_email='lukew25073@gmail.com',
       license='MIT',
       packages=find_packages(),
-      install_requires=[],
+      install_requires=[
+          'sympy',
+          'numpy',
+          'scipy'
+      ],
       entry_points={})
diff --git a/test.py b/test.py
index 74d73ce..2fa65b7 100644
--- a/test.py
+++ b/test.py
@@ -10,4 +10,4 @@ for item in list:
     print(item[2])
 
 # print(mathgen.getGenList())
-print(mathgen.genById(89))
+print(mathgen.genById(85))