diff --git a/Makefile b/Makefile
index 6ec8002..11ca1ee 100644
--- a/Makefile
+++ b/Makefile
@@ -38,7 +38,7 @@ install_pipenv:
 	python -m pip install --user pipenv
 	python -m pipenv --python ${PIPENV_PYTHON_VERSION}
 ifeq ($(PIPENV_PYTHON_VERSION), 2.7)
-	python -m pipenv install -r requirements.py2.txt
+	python -m pipenv install --ignore-pipfile --skip-lock --requirements requirements.py2.txt
 else
 	python -m pipenv install --dev
 endif
diff --git a/Pipfile b/Pipfile
index 6686963..64c244a 100644
--- a/Pipfile
+++ b/Pipfile
@@ -11,9 +11,6 @@ flake8 = "*"
 twine = "*"
 bleach = "==3.1.1"
 
-[requires]
-python_version = "3.7"
-
 [scripts]
 build = "python setup.py sdist bdist_wheel"
 test = "python -m unittest discover -s nuclio_sdk/test -p 'test_*.py' -v"
diff --git a/Pipfile.lock b/Pipfile.lock
index b7b3a02..68e5a48 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -1,12 +1,10 @@
 {
     "_meta": {
         "hash": {
-            "sha256": "973fcc606d5c3d64583f1beba77a0fcf6f7c67f430ca445ede7a4a5b4dab5e84"
+            "sha256": "ad399aa14ec3236a13bc508f029fd292cb457ef7563beacbe28582d5314430af"
         },
         "pipfile-spec": 6,
-        "requires": {
-            "python_version": "3.7"
-        },
+        "requires": {},
         "sources": [
             {
                 "name": "pypi",
@@ -44,14 +42,6 @@
             ],
             "version": "==3.0.4"
         },
-        "configparser": {
-            "hashes": [
-                "sha256:254c1d9c79f60c45dfde850850883d5aaa7f19a23f13561243a050d5a7c3fe4c",
-                "sha256:c7d282687a5308319bf3d2e7706e575c635b0a470342641c93bea0ea3b5331df"
-            ],
-            "markers": "python_version == '2.7'",
-            "version": "==4.0.2"
-        },
         "docutils": {
             "hashes": [
                 "sha256:0c5b78adfbf7762415433f5515cd5c9e762339e23369dbe8000d84a4bf4ab3af",
@@ -66,15 +56,6 @@
             ],
             "version": "==0.3"
         },
-        "enum34": {
-            "hashes": [
-                "sha256:13ef9a1c478203252107f66c25b99b45b1865693ca1284aab40dafa7e1e7ac17",
-                "sha256:708aabfb3d5898f99674c390d360d59efdd08547019763622365f19e84a7fef4",
-                "sha256:98df1f1937840b7d8012fea7f0b36392a3e6fd8a2f429c48a3ff4b1aad907f3f"
-            ],
-            "markers": "python_version < '3.4'",
-            "version": "==1.1.9"
-        },
         "flake8": {
             "hashes": [
                 "sha256:45681a117ecc81e870cbf1262835ae4af5e7a8b08e40b944a8a6e6b895914cfb",
@@ -83,14 +64,6 @@
             "index": "pypi",
             "version": "==3.7.9"
         },
-        "functools32": {
-            "hashes": [
-                "sha256:89d824aa6c358c421a234d7f9ee0bd75933a67c29588ce50aaa3acdf4d403fa0",
-                "sha256:f6253dfbe0538ad2e387bd8fdfd9293c925d63553f5813c4e587745416501e6d"
-            ],
-            "markers": "python_version < '3.2'",
-            "version": "==3.2.3.post2"
-        },
         "idna": {
             "hashes": [
                 "sha256:7588d1c14ae4c77d74036e8c22ff447b26d0fde8f007354fd48a7814db15b7cb",
@@ -98,6 +71,21 @@
             ],
             "version": "==2.9"
         },
+        "importlib-metadata": {
+            "hashes": [
+                "sha256:06f5b3a99029c7134207dd882428a66992a9de2bef7c2b699b5641f9886c3302",
+                "sha256:b97607a1a18a5100839aec1dc26a1ea17ee0d93b20b0f008d80a5a050afb200b"
+            ],
+            "markers": "python_version < '3.8'",
+            "version": "==1.5.0"
+        },
+        "keyring": {
+            "hashes": [
+                "sha256:b7bdfb1978cfdbabec63a3d389ad60242e7ffe9d739cae00760408c4f07d2c13",
+                "sha256:ebce8a4acfcabbcdfdcae2fc58571cebf11f71262cca898edceef89cdc891898"
+            ],
+            "version": "==21.1.1"
+        },
         "mccabe": {
             "hashes": [
                 "sha256:ab8a6258860da4b6677da4bd2fe5dc2c659cff31b3ee4f7f5d64e79735b80d42",
@@ -128,10 +116,10 @@
         },
         "pygments": {
             "hashes": [
-                "sha256:2a3fe295e54a20164a9df49c75fa58526d3be48e14aceba6d6b1e8ac0bfd6f1b",
-                "sha256:98c8aa5a9f778fcd1026a17361ddaf7330d1b7c62ae97c3bb0ae73e0b9b6b0fe"
+                "sha256:647344a061c249a3b74e230c739f434d7ea4d8b1d5f3721bc0f3558049b38f44",
+                "sha256:aa931c0bd5daa25c475afadb2147115134cfe501f0656828cbe7cb566c7123bc"
             ],
-            "version": "==2.5.2"
+            "version": "==2.6.1"
         },
         "readme-renderer": {
             "hashes": [
@@ -170,20 +158,11 @@
         },
         "twine": {
             "hashes": [
-                "sha256:630fadd6e342e725930be6c696537e3f9ccc54331742b16245dab292a17d0460",
-                "sha256:a3d22aab467b4682a22de4a422632e79d07eebd07ff2a7079effb13f8a693787"
+                "sha256:c1af8ca391e43b0a06bbc155f7f67db0bf0d19d284bfc88d1675da497a946124",
+                "sha256:d561a5e511f70275e5a485a6275ff61851c16ffcb3a95a602189161112d9f160"
             ],
             "index": "pypi",
-            "version": "==1.15.0"
-        },
-        "typing": {
-            "hashes": [
-                "sha256:91dfe6f3f706ee8cc32d38edbbf304e9b7583fb37108fef38229617f8b3eba23",
-                "sha256:c8cabb5ab8945cd2f54917be357d134db9cc1eb039e59d1606dc1e60cb1d9d36",
-                "sha256:f38d83c5a7a7086543a0f649564d661859c5146a85775ab90c0d2f93ffaa9714"
-            ],
-            "markers": "python_version < '3.5'",
-            "version": "==3.7.4.1"
+            "version": "==3.1.1"
         },
         "urllib3": {
             "hashes": [
@@ -198,6 +177,13 @@
                 "sha256:b36a1c245f2d304965eb4e0a82848379241dc04b865afcc4aab16748587e1923"
             ],
             "version": "==0.5.1"
+        },
+        "zipp": {
+            "hashes": [
+                "sha256:aa36550ff0c0b7ef7fa639055d797116ee891440eac1a56f378e2d3179e0320b",
+                "sha256:c599e4d75c98f6798c509911d08a22e6c021d074469042177c8c86fb92eefd96"
+            ],
+            "version": "==3.1.0"
         }
     }
 }