diff --git a/.dockerignore b/.dockerignore
index 98253acf0c5f6e971362b697231783b244156a44..72e8ffc0db8aad71a934dd11e5968bd5109e54b4 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,2 +1 @@
 *
-!requirements.txt
diff --git a/Dockerfile b/Dockerfile
index bfab5ab6bc4e8bf1c054ccd5f436f8f78903175e..40d9b47d8c3a4013c0c9a27a6196a71892d8b896 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,3 @@
 FROM python:3.7-alpine3.9
-COPY requirements.txt /
-RUN pip install --progress-bar=off --no-cache-dir -r requirements.txt
+RUN pip install --progress-bar=off --no-cache-dir check-s3-bucket==0.2.3
 ENTRYPOINT [ "/usr/local/bin/check_s3_bucket" ]
diff --git a/Pipfile b/Pipfile
index 95456669677ac024270803aa0d0578970fc26cdd..ec958a235db275b9c4f6ee9b8c0c075083afcab0 100644
--- a/Pipfile
+++ b/Pipfile
@@ -10,7 +10,6 @@ twine = "*"
 check-s3-bucket = {editable = true,path = "."}
 dbus-python = "*"
 keyring = "*"
-hashin = "*"
 
 [packages]
 
@@ -22,4 +21,3 @@ ci = "pre-commit run --all-files"
 build = "python setup.py bdist_wheel"
 clean = "git clean -fdX"
 upload = "twine upload -s dist/*"
-update-reqs = "hashin -u"
diff --git a/Pipfile.lock b/Pipfile.lock
index 2b601ac4f9988e4dfaded95ad29fe8461cae7e0a..a44f3a047736de4d3a4eab268ff28ab6d180a5bf 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,7 +1,7 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "780779a0114819967d7e8da079ae35331cdac7c6457dbae8cb0e657a9cc5e3a0"
+            "sha256": "ab68f9a4df2b89b3a2b7c32a41d5377afb0e5e30b444166bf46b1e827cb3b738"
         },
         "pipfile-spec": 6,
         "requires": {
@@ -40,10 +40,10 @@
         },
         "botocore": {
             "hashes": [
-                "sha256:13e75f594c77988efd13f0862f3c7397d587e74b623fe0825d48b0ec0dc96d6b",
-                "sha256:1fa1ad4be9e9fea77eed7d5021be4283e9bcfecc60d2de83f96552025c4725d1"
+                "sha256:a2ceaa00724228a961ef6f97da60ab09f3161a76e2f3ae82a49be396ca1083fc",
+                "sha256:f049dbfe83423f5cf350a861861e7f904967dea5e142ec1a17c70c07f9fdb117"
             ],
-            "version": "==1.12.172"
+            "version": "==1.12.180"
         },
         "bumpversion": {
             "hashes": [
@@ -154,14 +154,6 @@
             ],
             "version": "==0.3"
         },
-        "hashin": {
-            "hashes": [
-                "sha256:dbace6900d8de44f3106a64496803e45843cf4974755613db811a487fadbf4c6",
-                "sha256:fe764df71cabbbddfa72aa4d6685581c932bb5cf9100ddee6b2b04f3446ae2f7"
-            ],
-            "index": "pypi",
-            "version": "==0.14.5"
-        },
         "identify": {
             "hashes": [
                 "sha256:0a11379b46d06529795442742a043dc2fa14cd8c995ae81d1febbc5f1c014c87",
@@ -211,20 +203,6 @@
             ],
             "version": "==1.3.3"
         },
-        "packaging": {
-            "hashes": [
-                "sha256:0c98a5d0be38ed775798ece1b9727178c4469d9c3b4ada66e8e6b7849f8732af",
-                "sha256:9e1cbf8c12b1f1ce0bb5344b8d7ecf66a6f8a6e91bcb0c84593ed6d3ab5c4ab3"
-            ],
-            "version": "==19.0"
-        },
-        "pip-api": {
-            "hashes": [
-                "sha256:742b3edb5b077853ffcfec8a849f6ff1a622c6ecf648adb5fa0e4594998fcd46",
-                "sha256:a685eb315b9f10f6df4ceb66f3710148c8ad7de2d4ff29ee98fed0e4d949ec81"
-            ],
-            "version": "==0.0.10"
-        },
         "pkginfo": {
             "hashes": [
                 "sha256:7424f2c8511c186cd5424bbf31045b77435b37a8d604990b79d4e70d741148bb",
@@ -253,13 +231,6 @@
             ],
             "version": "==2.4.2"
         },
-        "pyparsing": {
-            "hashes": [
-                "sha256:1873c03321fc118f4e9746baf201ff990ceb915f433f23b395f5580d1840cb2a",
-                "sha256:9b6323ef4ab914af344ba97510e966d64ba91055d6b9afa6b30799340e89cc03"
-            ],
-            "version": "==2.4.0"
-        },
         "python-dateutil": {
             "hashes": [
                 "sha256:7e6584c74aeed623791615e26efd690f29817a27c73085b78e4bad02493df2fb",
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index dea9f17e2682d8c9f3ac311771ca640f65cc4e62..0000000000000000000000000000000000000000
--- a/requirements.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-botocore==1.12.172
-check-s3-bucket==0.2.0
-docutils==0.14
-jmespath==0.9.4
-python-dateutil==2.8.0
-pytz==2019.1
-six==1.12.0
-urllib3==1.25.3
diff --git a/setup.cfg b/setup.cfg
index 51b843ff2af53ceda6d4274c9c895cb637439328..58db513ebf54da72faabd2256c64c2dcd97c2d85 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -10,3 +10,5 @@ universal = 1
 
 [bumpversion:file:check_s3_bucket/__init__.py]
 
+[bumpversion:file:Dockerfile]
+