diff --git a/.github/workflows/python-app.yml b/.github/workflows/python-app.yml
index 6279069..d99fc20 100644
--- a/.github/workflows/python-app.yml
+++ b/.github/workflows/python-app.yml
@@ -56,9 +56,9 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          pip install flake8 pytest pipenv
+          pip install pipenv
           # if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-          pipenv install --verbose
+          pipenv install --dev
       - name: Lint with flake8
         run: |
           # stop the build if there are Python syntax errors or undefined names
diff --git a/Pipfile b/Pipfile
index 0d6ba4c..b3c5596 100644
--- a/Pipfile
+++ b/Pipfile
@@ -7,8 +7,9 @@ verify_ssl = true
 name = "pypi"
 
 [dev-packages]
-pytest = "==7.4.3"
+pytest = "*"
 pre-commit = "*"
+flake8 = "*"
 
 [packages]
 numpy = "==1.26.1"
diff --git a/Pipfile.lock b/Pipfile.lock
index c96ec85..9cdeccc 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
   "_meta": {
     "hash": {
-      "sha256": "6d0bc9bce8429dfed5a568e593b5a31f3ac637aa920f18b782fd8b1954542804"
+      "sha256": "78dc89e3c6d794915d2a09753d3dd82dd59b38c1d452db12cfd2b306b5186ced"
     },
     "pipfile-spec": 6,
     "requires": {
@@ -338,6 +338,15 @@
       "markers": "python_version >= '3.8'",
       "version": "==3.13.1"
     },
+    "flake8": {
+      "hashes": [
+        "sha256:d5b3857f07c030bdb5bf41c7f53799571d75c4491748a3adcd47de929e34cd23",
+        "sha256:ffdfce58ea94c6580c77888a86506937f9a1a227dfcd15f245d694ae20a6b6e5"
+      ],
+      "index": "pypi",
+      "markers": "python_full_version >= '3.8.1'",
+      "version": "==6.1.0"
+    },
     "identify": {
       "hashes": [
         "sha256:7736b3c7a28233637e3c36550646fc6389bedd74ae84cb788200cc8e2dd60b75",
@@ -354,6 +363,14 @@
       "markers": "python_version >= '3.7'",
       "version": "==2.0.0"
     },
+    "mccabe": {
+      "hashes": [
+        "sha256:348e0240c33b60bbdf4e523192ef919f28cb2c3d7d5c7794f74009290f236325",
+        "sha256:6c2d30ab6be0e4a46919781807b4f0d834ebdd6c6e3dca0bda5a15f863427b6e"
+      ],
+      "markers": "python_version >= '3.6'",
+      "version": "==0.7.0"
+    },
     "nodeenv": {
       "hashes": [
         "sha256:d51e0c37e64fbf47d017feac3145cdbb58836d7eee8c6f6d3b6880c5456227d2",
@@ -395,6 +412,22 @@
       "markers": "python_version >= '3.8'",
       "version": "==3.5.0"
     },
+    "pycodestyle": {
+      "hashes": [
+        "sha256:41ba0e7afc9752dfb53ced5489e89f8186be00e599e712660695b7a75ff2663f",
+        "sha256:44fe31000b2d866f2e41841b18528a505fbd7fef9017b04eff4e2648a0fadc67"
+      ],
+      "markers": "python_version >= '3.8'",
+      "version": "==2.11.1"
+    },
+    "pyflakes": {
+      "hashes": [
+        "sha256:4132f6d49cb4dae6819e5379898f2b8cce3c5f23994194c24b77d5da2e36f774",
+        "sha256:a0aae034c444db0071aa077972ba4768d40c830d9539fd45bf4cd3f8f6992efc"
+      ],
+      "markers": "python_version >= '3.8'",
+      "version": "==3.1.0"
+    },
     "pytest": {
       "hashes": [
         "sha256:0d009c083ea859a71b76adf7c1d502e4bc170b80a8ef002da5806527b9591fac",