diff --git a/examples/heroku/Pipfile b/examples/heroku/Pipfile
deleted file mode 100644
index 180331c..0000000
--- a/examples/heroku/Pipfile
+++ /dev/null
@@ -1,12 +0,0 @@
-[[source]]
-url = "https://pypi.org/simple"
-verify_ssl = true
-name = "pypi"
-
-[packages]
-responder = {version=">=0.0.3"}
-
-[dev-packages]
-
-[requires]
-python_version = "3.7"
diff --git a/examples/heroku/Pipfile.lock b/examples/heroku/Pipfile.lock
deleted file mode 100644
index e62a1b7..0000000
--- a/examples/heroku/Pipfile.lock
+++ /dev/null
@@ -1,225 +0,0 @@
-{
-    "_meta": {
-        "hash": {
-            "sha256": "bb8daba96850f25605226c489daa0c0af3e0aaeca209896f0783d0576e42ca41"
-        },
-        "pipfile-spec": 6,
-        "requires": {
-            "python_version": "3.7"
-        },
-        "sources": [
-            {
-                "name": "pypi",
-                "url": "https://pypi.org/simple",
-                "verify_ssl": true
-            }
-        ]
-    },
-    "default": {
-        "aiofiles": {
-            "hashes": [
-                "sha256:021ea0ba314a86027c166ecc4b4c07f2d40fc0f4b3a950d1868a0f2571c2bbee",
-                "sha256:1e644c2573f953664368de28d2aa4c89dfd64550429d0c27c4680ccd3aa4985d"
-            ],
-            "version": "==0.4.0"
-        },
-        "aniso8601": {
-            "hashes": [
-                "sha256:7849749cf00ae0680ad2bdfe4419c7a662bef19c03691a19e008c8b9a5267802",
-                "sha256:94f90871fcd314a458a3d4eca1c84448efbd200e86f55fe4c733c7a40149ef50"
-            ],
-            "version": "==3.0.2"
-        },
-        "certifi": {
-            "hashes": [
-                "sha256:376690d6f16d32f9d1fe8932551d80b23e9d393a8578c5633a2ed39a64861638",
-                "sha256:456048c7e371c089d0a77a5212fb37a2c2dce1e24146e3b7e0261736aaeaa22a"
-            ],
-            "version": "==2018.8.24"
-        },
-        "chardet": {
-            "hashes": [
-                "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae",
-                "sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691"
-            ],
-            "version": "==3.0.4"
-        },
-        "click": {
-            "hashes": [
-                "sha256:2335065e6395b9e67ca716de5f7526736bfa6ceead690adf616d925bdc622b13",
-                "sha256:5b94b49521f6456670fdb30cd82a4eca9412788a93fa6dd6df72c94d5a8ff2d7"
-            ],
-            "version": "==7.0"
-        },
-        "graphene": {
-            "hashes": [
-                "sha256:b8ec446d17fa68721636eaad3d6adc1a378cb6323e219814c8f98c9928fc9642",
-                "sha256:faa26573b598b22ffd274e2fd7a4c52efa405dcca96e01a62239482246248aa3"
-            ],
-            "version": "==2.1.3"
-        },
-        "graphql-core": {
-            "hashes": [
-                "sha256:889e869be5574d02af77baf1f30b5db9ca2959f1c9f5be7b2863ead5a3ec6181",
-                "sha256:9462e22e32c7f03b667373ec0a84d95fba10e8ce2ead08f29fbddc63b671b0c1"
-            ],
-            "version": "==2.1"
-        },
-        "graphql-relay": {
-            "hashes": [
-                "sha256:2716b7245d97091af21abf096fabafac576905096d21ba7118fba722596f65db"
-            ],
-            "version": "==0.4.5"
-        },
-        "graphql-server-core": {
-            "hashes": [
-                "sha256:e5f82add4b3d5580aa1f1e7d9f00e944ad3abe1b65eb337e611d6a77cc20f231"
-            ],
-            "version": "==1.1.1"
-        },
-        "h11": {
-            "hashes": [
-                "sha256:acca6a44cb52a32ab442b1779adf0875c443c689e9e028f8d831a3769f9c5208",
-                "sha256:f2b1ca39bfed357d1f19ac732913d5f9faa54a5062eca7d2ec3a916cfb7ae4c7"
-            ],
-            "version": "==0.8.1"
-        },
-        "idna": {
-            "hashes": [
-                "sha256:156a6814fb5ac1fc6850fb002e0852d56c0c8d2531923a51032d1b70760e186e",
-                "sha256:684a38a6f903c1d71d6d5fac066b58d7768af4de2b832e426ec79c30daa94a16"
-            ],
-            "version": "==2.7"
-        },
-        "jinja2": {
-            "hashes": [
-                "sha256:74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd",
-                "sha256:f84be1bb0040caca4cea721fcbbbbd61f9be9464ca236387158b0feea01914a4"
-            ],
-            "version": "==2.10"
-        },
-        "markupsafe": {
-            "hashes": [
-                "sha256:a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665"
-            ],
-            "version": "==1.0"
-        },
-        "parse": {
-            "hashes": [
-                "sha256:9dd6048ea212cd032a342f9f6aa2b7bc222f7407c7e37bdc2777fecd36897437"
-            ],
-            "version": "==1.9.0"
-        },
-        "promise": {
-            "hashes": [
-                "sha256:2ebbfc10b7abf6354403ed785fe4f04b9dfd421eb1a474ac8d187022228332af",
-                "sha256:348f5f6c3edd4fd47c9cd65aed03ac1b31136d375aa63871a57d3e444c85655c"
-            ],
-            "version": "==2.2.1"
-        },
-        "python-multipart": {
-            "hashes": [
-                "sha256:f7bb5f611fc600d15fa47b3974c8aa16e93724513b49b5f95c81e6624c83fa43"
-            ],
-            "version": "==0.0.5"
-        },
-        "pyyaml": {
-            "hashes": [
-                "sha256:3d7da3009c0f3e783b2c873687652d83b1bbfd5c88e9813fb7e5b03c0dd3108b",
-                "sha256:3ef3092145e9b70e3ddd2c7ad59bdd0252a94dfe3949721633e41344de00a6bf",
-                "sha256:40c71b8e076d0550b2e6380bada1f1cd1017b882f7e16f09a65be98e017f211a",
-                "sha256:558dd60b890ba8fd982e05941927a3911dc409a63dcb8b634feaa0cda69330d3",
-                "sha256:a7c28b45d9f99102fa092bb213aa12e0aaf9a6a1f5e395d36166639c1f96c3a1",
-                "sha256:aa7dd4a6a427aed7df6fb7f08a580d68d9b118d90310374716ae90b710280af1",
-                "sha256:bc558586e6045763782014934bfaf39d48b8ae85a2713117d16c39864085c613",
-                "sha256:d46d7982b62e0729ad0175a9bc7e10a566fc07b224d2c79fafb5e032727eaa04",
-                "sha256:d5eef459e30b09f5a098b9cea68bebfeb268697f78d647bd255a085371ac7f3f",
-                "sha256:e01d3203230e1786cd91ccfdc8f8454c8069c91bee3962ad93b87a4b2860f537",
-                "sha256:e170a9e6fcfd19021dd29845af83bb79236068bf5fd4df3327c1be18182b2531"
-            ],
-            "version": "==3.13"
-        },
-        "requests": {
-            "hashes": [
-                "sha256:63b52e3c866428a224f97cab011de738c36aec0185aa91cfacd418b5d58911d1",
-                "sha256:ec22d826a36ed72a7358ff3fe56cbd4ba69dd7a6718ffd450ff0e9df7a47ce6a"
-            ],
-            "version": "==2.19.1"
-        },
-        "responder": {
-            "hashes": [
-                "sha256:56bbc0246e113d2a6f98dbb3f884f305a238e268fda91aceeac3e6470c005fd7",
-                "sha256:e70820c27adee0aee5fde2a024c7e446bf1d6374863b1a80f6f62c16365b6341"
-            ],
-            "index": "pypi",
-            "version": "==0.0.2"
-        },
-        "rfc3986": {
-            "hashes": [
-                "sha256:632b8fcd2ac37f24334316227f909be4f9d0738cbf409404cff6fa5f69a24093",
-                "sha256:8458571c4c57e1cf23593ad860bb601b6a604df6217f829c2bc70dc4b5af941b"
-            ],
-            "version": "==1.1.0"
-        },
-        "rx": {
-            "hashes": [
-                "sha256:13a1d8d9e252625c173dc795471e614eadfe1cf40ffc684e08b8fff0d9748c23",
-                "sha256:7357592bc7e881a95e0c2013b73326f704953301ab551fbc8133a6fadab84105"
-            ],
-            "version": "==1.6.1"
-        },
-        "six": {
-            "hashes": [
-                "sha256:70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9",
-                "sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb"
-            ],
-            "version": "==1.11.0"
-        },
-        "starlette": {
-            "hashes": [
-                "sha256:9f42bba2c3140402df7fe645b79aadc694cca80140d7bdd43b8a7175f84a8a70"
-            ],
-            "version": "==0.4.1"
-        },
-        "urllib3": {
-            "hashes": [
-                "sha256:a68ac5e15e76e7e5dd2b8f94007233e01effe3e50e8daddf69acfd81cb686baf",
-                "sha256:b5725a0bd4ba422ab0e66e89e030c806576753ea3ee08554382c14e685d117b5"
-            ],
-            "version": "==1.23"
-        },
-        "uvicorn": {
-            "hashes": [
-                "sha256:8de03999a936d8704f07cc3b1d3a3edb6922a068b64d84b4f5e49604c8b70a11"
-            ],
-            "version": "==0.3.12"
-        },
-        "websockets": {
-            "hashes": [
-                "sha256:0e2f7d6567838369af074f0ef4d0b802d19fa1fee135d864acc656ceefa33136",
-                "sha256:2a16dac282b2fdae75178d0ed3d5b9bc3258dabfae50196cbb30578d84b6f6a6",
-                "sha256:5a1fa6072405648cb5b3688e9ed3b94be683ce4a4e5723e6f5d34859dee495c1",
-                "sha256:5c1f55a1274df9d6a37553fef8cff2958515438c58920897675c9bc70f5a0538",
-                "sha256:669d1e46f165e0ad152ed8197f7edead22854a6c90419f544e0f234cc9dac6c4",
-                "sha256:695e34c4dbea18d09ab2c258994a8bf6a09564e762655408241f6a14592d2908",
-                "sha256:6b2e03d69afa8d20253455e67b64de1a82ff8612db105113cccec35d3f8429f0",
-                "sha256:79ca7cdda7ad4e3663ea3c43bfa8637fc5d5604c7737f19a8964781abbd1148d",
-                "sha256:7fd2dd9a856f72e6ed06f82facfce01d119b88457cd4b47b7ae501e8e11eba9c",
-                "sha256:82c0354ac39379d836719a77ee360ef865377aa6fdead87909d50248d0f05f4d",
-                "sha256:8f3b956d11c5b301206382726210dc1d3bee1a9ccf7aadf895aaf31f71c3716c",
-                "sha256:91ec98640220ae05b34b79ee88abf27f97ef7c61cf525eec57ea8fcea9f7dddb",
-                "sha256:952be9540d83dba815569d5cb5f31708801e0bbfc3a8c5aef1890b57ed7e58bf",
-                "sha256:99ac266af38ba1b1fe13975aea01ac0e14bb5f3a3200d2c69f05385768b8568e",
-                "sha256:9fa122e7adb24232247f8a89f2d9070bf64b7869daf93ac5e19546b409e47e96",
-                "sha256:a0873eadc4b8ca93e2e848d490809e0123eea154aa44ecd0109c4d0171869584",
-                "sha256:cb998bd4d93af46b8b49ecf5a72c0a98e5cc6d57fdca6527ba78ad89d6606484",
-                "sha256:e02e57346f6a68523e3c43bbdf35dde5c440318d1f827208ae455f6a2ace446d",
-                "sha256:e79a5a896bcee7fff24a788d72e5c69f13e61369d055f28113e71945a7eb1559",
-                "sha256:ee55eb6bcf23ecc975e6b47c127c201b913598f38b6a300075f84eeef2d3baff",
-                "sha256:f1414e6cbcea8d22843e7eafdfdfae3dd1aba41d1945f6ca66e4806c07c4f454"
-            ],
-            "version": "==6.0"
-        }
-    },
-    "develop": {}
-}
diff --git a/examples/heroku/requirements.txt b/examples/heroku/requirements.txt
new file mode 100644
index 0000000..3a54fe3
--- /dev/null
+++ b/examples/heroku/requirements.txt
@@ -0,0 +1,27 @@
+-i https://pypi.org/simple
+aiofiles==0.4.0
+aniso8601==3.0.2
+certifi==2018.8.24
+chardet==3.0.4
+click==7.0
+graphene==2.1.3
+graphql-core==2.1
+graphql-relay==0.4.5
+graphql-server-core==1.1.1
+h11==0.8.1
+idna==2.7
+jinja2==2.10
+markupsafe==1.0
+parse==1.9.0
+promise==2.2.1
+python-multipart==0.0.5
+pyyaml==3.13
+requests==2.19.1
+responder==0.0.3
+rfc3986==1.1.0
+rx==1.6.1
+six==1.11.0
+starlette==0.4.1
+urllib3==1.23
+uvicorn==0.3.12
+websockets==6.0