new file mode 100644
--- /dev/null
+++ b/tools/docs/Pipfile
@@ -0,0 +1,17 @@
+[[source]]
+url = "https://pypi.org/simple"
+verify_ssl = true
+name = "pypi"
+
+[packages]
+backports-abc = "==0.5"
+boto3 = "==1.4.4"
+livereload = "==2.5.1"
+recommonmark = "==0.4.0"
+singledispatch = "==3.4.0.3"
+sphinx = "==1.6.7"
+sphinx-js = "==2.1"
+sphinx-rtd-theme = "==0.2.4"
+
+[requires]
+python_version = "2.7"

new file mode 100644
--- /dev/null
+++ b/tools/docs/Pipfile.lock
@@ -0,0 +1,263 @@
+{
+    "_meta": {
+        "hash": {
+            "sha256": "bd4144a913361336dadcb4eb82b9fc24c6f36b49f7248ab222a1fb688932a1bb"
+        },
+        "pipfile-spec": 6,
+        "requires": {
+            "python_version": "2.7"
+        },
+        "sources": [
+            {
+                "name": "pypi",
+                "url": "https://pypi.org/simple",
+                "verify_ssl": true
+            }
+        ]
+    },
+    "default": {
+        "alabaster": {
+            "hashes": [
+                "sha256:2eef172f44e8d301d25aff8068fddd65f767a3f04b5f15b0f4922f113aa1c732",
+                "sha256:37cdcb9e9954ed60912ebc1ca12a9d12178c26637abdf124e3cde2341c257fe0"
+            ],
+            "version": "==0.7.10"
+        },
+        "babel": {
+            "hashes": [
+                "sha256:6778d85147d5d85345c14a26aada5e478ab04e39b078b0745ee6870c2b5cf669",
+                "sha256:8cba50f48c529ca3fa18cf81fa9403be176d374ac4d60738b839122dfaaa3d23"
+            ],
+            "version": "==2.6.0"
+        },
+        "backports-abc": {
+            "hashes": [
+                "sha256:033be54514a03e255df75c5aee8f9e672f663f93abb723444caec8fe43437bde",
+                "sha256:52089f97fe7a9aa0d3277b220c1d730a85aefd64e1b2664696fe35317c5470a7"
+            ],
+            "index": "pypi",
+            "version": "==0.5"
+        },
+        "boto3": {
+            "hashes": [
+                "sha256:5050c29353fec97301116386f469fa5858ccf47201623b53cf9f74e603bda52f",
+                "sha256:518f724c4758e5a5bed114fbcbd1cf470a15306d416ff421a025b76f1d390939"
+            ],
+            "index": "pypi",
+            "version": "==1.4.4"
+        },
+        "botocore": {
+            "hashes": [
+                "sha256:26917b37fe993dc23dd1eb69c3208500fd057dc8b2e18b7c97bb26ae08ce7aa8",
+                "sha256:471d95025408cfafa30133991f35d2839fcc12a86198465a507499790ee49b4b"
+            ],
+            "version": "==1.5.95"
+        },
+        "certifi": {
+            "hashes": [
+                "sha256:13e698f54293db9f89122b0581843a782ad0934a4fe0172d2a980ba77fc61bb7",
+                "sha256:9fa520c1bacfb634fa7af20a76bcbd3d5fb390481724c597da32c719a7dca4b0"
+            ],
+            "version": "==2018.4.16"
+        },
+        "chardet": {
+            "hashes": [
+                "sha256:84ab92ed1c4d4f16916e05906b6b75a6c0fb5db821cc65e70cbd64a3e2a5eaae",
+                "sha256:fc323ffcaeaed0e0a02bf4d117757b98aed530d9ed4531e3e15460124c106691"
+            ],
+            "version": "==3.0.4"
+        },
+        "commonmark": {
+            "hashes": [
+                "sha256:34d73ec8085923c023930dfc0bcd1c4286e28a2a82de094bb72fabcc0281cbe5"
+            ],
+            "version": "==0.5.4"
+        },
+        "docutils": {
+            "hashes": [
+                "sha256:02aec4bd92ab067f6ff27a38a38a41173bf01bed8f89157768c1573f53e474a6",
+                "sha256:51e64ef2ebfb29cae1faa133b3710143496eca21c530f3f71424d77687764274",
+                "sha256:7a4bd47eaf6596e1295ecb11361139febe29b084a87bf005bf899f9a42edc3c6"
+            ],
+            "version": "==0.14"
+        },
+        "futures": {
+            "hashes": [
+                "sha256:9ec02aa7d674acb8618afb127e27fde7fc68994c0437ad759fa094a574adb265",
+                "sha256:ec0a6cb848cc212002b9828c3e34c675e0c9ff6741dc445cab6fdd4e1085d1f1"
+            ],
+            "markers": "python_version == '2.6' or python_version == '2.7'",
+            "version": "==3.2.0"
+        },
+        "idna": {
+            "hashes": [
+                "sha256:2c6a5de3089009e3da7c5dde64a141dbc8551d5b7f6cf4ed7c2568d0cc520a8f",
+                "sha256:8c7309c718f94b3a625cb648ace320157ad16ff131ae0af362c9f21b80ef6ec4"
+            ],
+            "version": "==2.6"
+        },
+        "imagesize": {
+            "hashes": [
+                "sha256:3620cc0cadba3f7475f9940d22431fc4d407269f1be59ec9b8edcca26440cf18",
+                "sha256:5b326e4678b6925158ccc66a9fa3122b6106d7c876ee32d7de6ce59385b96315"
+            ],
+            "version": "==1.0.0"
+        },
+        "jinja2": {
+            "hashes": [
+                "sha256:74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd",
+                "sha256:f84be1bb0040caca4cea721fcbbbbd61f9be9464ca236387158b0feea01914a4"
+            ],
+            "version": "==2.10"
+        },
+        "jmespath": {
+            "hashes": [
+                "sha256:6a81d4c9aa62caf061cb517b4d9ad1dd300374cd4706997aff9cd6aedd61fc64",
+                "sha256:f11b4461f425740a1d908e9a3f7365c3d2e569f6ca68a2ff8bc5bcd9676edd63"
+            ],
+            "version": "==0.9.3"
+        },
+        "livereload": {
+            "hashes": [
+                "sha256:422de10d7ea9467a1ba27cbaffa84c74b809d96fb1598d9de4b9b676adf35e2c",
+                "sha256:5ed6506f5d526ee712da9f3739c27714e6f3376f3e481728d298efceae0ec83a"
+            ],
+            "index": "pypi",
+            "version": "==2.5.1"
+        },
+        "markupsafe": {
+            "hashes": [
+                "sha256:a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665"
+            ],
+            "version": "==1.0"
+        },
+        "parsimonious": {
+            "hashes": [
+                "sha256:396d424f64f834f9463e81ba79a331661507a21f1ed7b644f7f6a744006fd938"
+            ],
+            "version": "==0.7.0"
+        },
+        "pygments": {
+            "hashes": [
+                "sha256:78f3f434bcc5d6ee09020f92ba487f95ba50f1e3ef83ae96b9d5ffa1bab25c5d",
+                "sha256:dbae1046def0efb574852fab9e90209b23f556367b5a320c0bcb871c77c3e8cc"
+            ],
+            "version": "==2.2.0"
+        },
+        "python-dateutil": {
+            "hashes": [
+                "sha256:1adb80e7a782c12e52ef9a8182bebeb73f1d7e24e374397af06fb4956c8dc5c0",
+                "sha256:e27001de32f627c22380a688bcc43ce83504a7bc5da472209b4c70f02829f0b8"
+            ],
+            "version": "==2.7.3"
+        },
+        "pytz": {
+            "hashes": [
+                "sha256:65ae0c8101309c45772196b21b74c46b2e5d11b6275c45d251b150d5da334555",
+                "sha256:c06425302f2cf668f1bba7a0a03f3c1d34d4ebeef2c72003da308b3947c7f749"
+            ],
+            "version": "==2018.4"
+        },
+        "recommonmark": {
+            "hashes": [
+                "sha256:6e29c723abcf5533842376d87c4589e62923ecb6002a8e059eb608345ddaff9d",
+                "sha256:cd8bf902e469dae94d00367a8197fb7b81fcabc9cfb79d520e0d22d0fbeaa8b7"
+            ],
+            "index": "pypi",
+            "version": "==0.4.0"
+        },
+        "requests": {
+            "hashes": [
+                "sha256:6a1b267aa90cac58ac3a765d067950e7dbbf75b1da07e895d1f594193a40a38b",
+                "sha256:9c443e7324ba5b85070c4a818ade28bfabedf16ea10206da1132edaa6dda237e"
+            ],
+            "version": "==2.18.4"
+        },
+        "s3transfer": {
+            "hashes": [
+                "sha256:90dc18e028989c609146e241ea153250be451e05ecc0c2832565231dacdf59c1",
+                "sha256:c7a9ec356982d5e9ab2d4b46391a7d6a950e2b04c472419f5fdec70cc0ada72f"
+            ],
+            "version": "==0.1.13"
+        },
+        "singledispatch": {
+            "hashes": [
+                "sha256:5b06af87df13818d14f08a028e42f566640aef80805c3b50c5056b086e3c2b9c",
+                "sha256:833b46966687b3de7f438c761ac475213e53b306740f1abfaa86e1d1aae56aa8"
+            ],
+            "index": "pypi",
+            "version": "==3.4.0.3"
+        },
+        "six": {
+            "hashes": [
+                "sha256:70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9",
+                "sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb"
+            ],
+            "version": "==1.11.0"
+        },
+        "snowballstemmer": {
+            "hashes": [
+                "sha256:919f26a68b2c17a7634da993d91339e288964f93c274f1343e3bbbe2096e1128",
+                "sha256:9f3bcd3c401c3e862ec0ebe6d2c069ebc012ce142cce209c098ccb5b09136e89"
+            ],
+            "version": "==1.2.1"
+        },
+        "sphinx": {
+            "hashes": [
+                "sha256:832bed0dc6099c2abca957d90ff55bc1a6ec4425c13fc144adbae68a970e3775",
+                "sha256:d5b91b4dad56ffc9f19425ebaa7bc23290a0a2e9035781d5bc54822384663277"
+            ],
+            "index": "pypi",
+            "version": "==1.6.7"
+        },
+        "sphinx-js": {
+            "hashes": [
+                "sha256:8c12b2b7ccc6941cbc7c70e4fada903e2947376b48ce07cbb72c72d88f0eef1e"
+            ],
+            "index": "pypi",
+            "version": "==2.1"
+        },
+        "sphinx-rtd-theme": {
+            "hashes": [
+                "sha256:2df74b8ff6fae6965c527e97cca6c6c944886aae474b490e17f92adfbe843417",
+                "sha256:62ee4752716e698bad7de8a18906f42d33664128eea06c46b718fc7fbd1a9f5c"
+            ],
+            "index": "pypi",
+            "version": "==0.2.4"
+        },
+        "sphinxcontrib-websupport": {
+            "hashes": [
+                "sha256:7a85961326aa3a400cd4ad3c816d70ed6f7c740acd7ce5d78cd0a67825072eb9",
+                "sha256:f4932e95869599b89bf4f80fc3989132d83c9faa5bf633e7b5e0c25dffb75da2"
+            ],
+            "version": "==1.0.1"
+        },
+        "tornado": {
+            "hashes": [
+                "sha256:1b83d5c10550f2653380b4c77331d6f8850f287c4f67d7ce1e1c639d9222fbc7",
+                "sha256:408d129e9d13d3c55aa73f8084aa97d5f90ed84132e38d6932e63a67d5bec563",
+                "sha256:88ce0282cce70df9045e515f578c78f1ebc35dcabe1d70f800c3583ebda7f5f5",
+                "sha256:ba9fbb249ac5390bff8a1d6aa4b844fd400701069bda7d2e380dfe2217895101",
+                "sha256:c050089173c2e9272244bccfb6a8615fb9e53b79420a5551acfa76094ecc3111"
+            ],
+            "version": "==5.0.2"
+        },
+        "typing": {
+            "hashes": [
+                "sha256:3a887b021a77b292e151afb75323dea88a7bc1b3dfa92176cff8e44c8b68bddf",
+                "sha256:b2c689d54e1144bbcfd191b0832980a21c2dbcf7b5ff7a66248a60c90e951eb8",
+                "sha256:d400a9344254803a2368533e4533a4200d21eb7b6b729c173bc38201a74db3f2"
+            ],
+            "markers": "python_version < '3.5'",
+            "version": "==3.6.4"
+        },
+        "urllib3": {
+            "hashes": [
+                "sha256:06330f386d6e4b195fbfc736b297f58c5a892e4440e54d294d7004e3a9bbea1b",
+                "sha256:cc44da8e1145637334317feebd728bd869a35285b93cbb4cca2577da7e62db4f"
+            ],
+            "version": "==1.22"
+        }
+    },
+    "develop": {}
+}

--- a/tools/docs/mach_commands.py
+++ b/tools/docs/mach_commands.py
@@ -53,19 +53,17 @@ class Documentation(MachCommandBase):
                      help='Upload generated files to S3.')
     def build_docs(self, path=None, fmt='html', outdir=None, auto_open=True,
                    serve=True, http=None, archive=False, upload=False):
         try:
             which.which('jsdoc')
         except which.WhichError:
             return die('jsdoc not found - please install from npm.')
 
-        self._activate_virtualenv()
-        self.virtualenv_manager.install_pip_requirements(
-            os.path.join(here, 'requirements.txt'), quiet=True)
+        self.activate_pipenv(os.path.join(here, 'Pipfile'))
 
         import webbrowser
         from livereload import Server
         from moztreedocs.package import create_tarball
 
         outdir = outdir or os.path.join(self.topobjdir, 'docs')
         savedir = os.path.join(outdir, fmt)
 
@@ -171,18 +169,16 @@ class Documentation(MachCommandBase):
             return path
 
         for d in valid_doc_dirs:
             p = os.path.join(path, d)
             if os.path.isdir(p):
                 return p
 
     def _s3_upload(self, root, project, version=None):
-        self.virtualenv_manager.install_pip_package('boto3==1.4.4')
-
         from moztreedocs.package import distribution_files
         from moztreedocs.upload import s3_upload
 
         # Files are uploaded to multiple locations:
         #
         # <project>/latest
         # <project>/<version>
         #

deleted file mode 100644
--- a/tools/docs/requirements.txt
+++ /dev/null
@@ -1,88 +0,0 @@
-docutils==0.14 \
-    --hash=sha256:7a4bd47eaf6596e1295ecb11361139febe29b084a87bf005bf899f9a42edc3c6 \
-    --hash=sha256:02aec4bd92ab067f6ff27a38a38a41173bf01bed8f89157768c1573f53e474a6 \
-    --hash=sha256:51e64ef2ebfb29cae1faa133b3710143496eca21c530f3f71424d77687764274
-Jinja2==2.10 \
-    --hash=sha256:74c935a1b8bb9a3947c50a54766a969d4846290e1e788ea44c1392163723c3bd \
-    --hash=sha256:f84be1bb0040caca4cea721fcbbbbd61f9be9464ca236387158b0feea01914a4
-packaging==16.8 \
-    --hash=sha256:99276dc6e3a7851f32027a68f1095cd3f77c148091b092ea867a351811cfe388 \
-    --hash=sha256:5d50835fdf0a7edf0b55e311b7c887786504efea1177abd7e69329a8e5ea619e
-imagesize==0.7.1 \
-    --hash=sha256:6ebdc9e0ad188f9d1b2cdd9bc59cbe42bf931875e829e7a595e6b3abdc05cdfb \
-    --hash=sha256:0ab2c62b87987e3252f89d30b7cedbec12a01af9274af9ffa48108f2c13c6062
-six==1.11.0 \
-    --hash=sha256:832dc0e10feb1aa2c68dcc57dbb658f1c7e65b9b61af69048abc87a2db00a0eb \
-    --hash=sha256:70e8a77beed4562e7f14fe23a786b54f6296e34344c23bc42f07b15018ff98e9
-alabaster==0.7.10 \
-    --hash=sha256:2eef172f44e8d301d25aff8068fddd65f767a3f04b5f15b0f4922f113aa1c732 \
-    --hash=sha256:37cdcb9e9954ed60912ebc1ca12a9d12178c26637abdf124e3cde2341c257fe0
-snowballstemmer==1.2.1 \
-    --hash=sha256:9f3bcd3c401c3e862ec0ebe6d2c069ebc012ce142cce209c098ccb5b09136e89 \
-    --hash=sha256:919f26a68b2c17a7634da993d91339e288964f93c274f1343e3bbbe2096e1128
-Pygments==2.2.0 \
-    --hash=sha256:78f3f434bcc5d6ee09020f92ba487f95ba50f1e3ef83ae96b9d5ffa1bab25c5d \
-    --hash=sha256:dbae1046def0efb574852fab9e90209b23f556367b5a320c0bcb871c77c3e8cc
-sphinxcontrib-websupport==1.0.1 \
-    --hash=sha256:7a85961326aa3a400cd4ad3c816d70ed6f7c740acd7ce5d78cd0a67825072eb9 \
-    --hash=sha256:f4932e95869599b89bf4f80fc3989132d83c9faa5bf633e7b5e0c25dffb75da2
-typing==3.6.4 \
-    --hash=sha256:b2c689d54e1144bbcfd191b0832980a21c2dbcf7b5ff7a66248a60c90e951eb8 \
-    --hash=sha256:3a887b021a77b292e151afb75323dea88a7bc1b3dfa92176cff8e44c8b68bddf \
-    --hash=sha256:d400a9344254803a2368533e4533a4200d21eb7b6b729c173bc38201a74db3f2
-Babel==2.5.3 \
-    --hash=sha256:ad209a68d7162c4cff4b29cdebe3dec4cef75492df501b0049a9433c96ce6f80 \
-    --hash=sha256:8ce4cb6fdd4393edd323227cba3a077bceb2a6ce5201c902c65e730046f41f14
-MarkupSafe==1.0 \
-    --hash=sha256:a6be69091dac236ea9c6bc7d012beab42010fa914c459791d627dad4910eb665
-pyparsing==2.2.0 \
-    --hash=sha256:fee43f17a9c4087e7ed1605bd6df994c6173c1e977d7ade7b651292fab2bd010 \
-    --hash=sha256:0832bcf47acd283788593e7a0f542407bd9550a55a8a8435214a1960e04bcb04 \
-    --hash=sha256:9e8143a3e15c13713506886badd96ca4b579a87fbdf49e550dbfc057d6cb218e \
-    --hash=sha256:281683241b25fe9b80ec9d66017485f6deff1af5cde372469134b56ca8447a07 \
-    --hash=sha256:b8b3117ed9bdf45e14dcc89345ce638ec7e0e29b2b579fa1ecf32ce45ebac8a5 \
-    --hash=sha256:8f1e18d3fd36c6795bb7e02a39fd05c611ffc2596c1e0d995d34d67630426c18 \
-    --hash=sha256:e4d45427c6e20a59bf4f88c639dcc03ce30d193112047f94012102f235853a58
-pytz==2018.3 \
-    --hash=sha256:ed6509d9af298b7995d69a440e2822288f2eca1681b8cce37673dbb10091e5fe \
-    --hash=sha256:f93ddcdd6342f94cea379c73cddb5724e0d6d0a1c91c9bdef364dc0368ba4fda \
-    --hash=sha256:61242a9abc626379574a166dc0e96a66cd7c3b27fc10868003fa210be4bff1c9 \
-    --hash=sha256:ba18e6a243b3625513d85239b3e49055a2f0318466e0b8a92b8fb8ca7ccdf55f \
-    --hash=sha256:07edfc3d4d2705a20a6e99d97f0c4b61c800b8232dc1c04d87e8554f130148dd \
-    --hash=sha256:3a47ff71597f821cd84a162e71593004286e5be07a340fd462f0d33a760782b5 \
-    --hash=sha256:5bd55c744e6feaa4d599a6cbd8228b4f8f9ba96de2c38d56f08e534b3c9edf0d \
-    --hash=sha256:887ab5e5b32e4d0c86efddd3d055c1f363cbaa583beb8da5e22d2fa2f64d51ef \
-    --hash=sha256:410bcd1d6409026fbaa65d9ed33bf6dd8b1e94a499e32168acfc7b332e4095c0
-Sphinx==1.6.7 \
-    --hash=sha256:d5b91b4dad56ffc9f19425ebaa7bc23290a0a2e9035781d5bc54822384663277 \
-    --hash=sha256:832bed0dc6099c2abca957d90ff55bc1a6ec4425c13fc144adbae68a970e3775
-sphinx_rtd_theme==0.2.4 \
-    --hash=sha256:62ee4752716e698bad7de8a18906f42d33664128eea06c46b718fc7fbd1a9f5c \
-    --hash=sha256:2df74b8ff6fae6965c527e97cca6c6c944886aae474b490e17f92adfbe843417
-parsimonious==0.7.0 \
-    --hash=sha256:396d424f64f834f9463e81ba79a331661507a21f1ed7b644f7f6a744006fd938
-sphinx-js==2.1 \
-    --hash=sha256:8c12b2b7ccc6941cbc7c70e4fada903e2947376b48ce07cbb72c72d88f0eef1e
-CommonMark==0.5.4 \
-    --hash=sha256:34d73ec8085923c023930dfc0bcd1c4286e28a2a82de094bb72fabcc0281cbe5
-recommonmark==0.4.0 \
-    --hash=sha256:cd8bf902e469dae94d00367a8197fb7b81fcabc9cfb79d520e0d22d0fbeaa8b7 \
-    --hash=sha256:6e29c723abcf5533842376d87c4589e62923ecb6002a8e059eb608345ddaff9d
-futures==3.2.0 \
-    --hash=sha256:ec0a6cb848cc212002b9828c3e34c675e0c9ff6741dc445cab6fdd4e1085d1f1 \
-    --hash=sha256:9ec02aa7d674acb8618afb127e27fde7fc68994c0437ad759fa094a574adb265
-singledispatch==3.4.0.3 \
-    --hash=sha256:833b46966687b3de7f438c761ac475213e53b306740f1abfaa86e1d1aae56aa8 \
-    --hash=sha256:5b06af87df13818d14f08a028e42f566640aef80805c3b50c5056b086e3c2b9c
-backports_abc==0.5 \
-    --hash=sha256:52089f97fe7a9aa0d3277b220c1d730a85aefd64e1b2664696fe35317c5470a7 \
-    --hash=sha256:033be54514a03e255df75c5aee8f9e672f663f93abb723444caec8fe43437bde
-tornado==5.0.1 \
-    --hash=sha256:69194436190b777abf0b631a692b0b29ba4157d18eeee07327b486e033b944dc \
-    --hash=sha256:186ba4f280429a24120f329c7c08ea91818ff6bf47ed2ccb66f8f460698fc4ed \
-    --hash=sha256:b5bf7407f88327b80e666dabf91a1e7beb11236855a5c65ba5cf0e9e25ae296b \
-    --hash=sha256:4d192236a9ffee54cb0032f22a8a0cfa64258872f1d83d71f3356681f69a37be \
-    --hash=sha256:3e9a2333362d3dad7876d902595b64aea1a2f91d0df13191ea1f8bca5a447771
-livereload==2.5.1 \
-    --hash=sha256:5ed6506f5d526ee712da9f3739c27714e6f3376f3e481728d298efceae0ec83a \
-    --hash=sha256:422de10d7ea9467a1ba27cbaffa84c74b809d96fb1598d9de4b9b676adf35e2c