diff --git a/src/emailservice/requirements.in b/src/emailservice/requirements.in
new file mode 100644
index 0000000..fa3f39c
--- /dev/null
+++ b/src/emailservice/requirements.in
@@ -0,0 +1,6 @@
+google-api-core==1.6.0
+grpcio-health-checking==1.12.1
+grpcio==1.16.1
+jinja2==2.10
+opencensus[stackdriver]==0.1.10
+python-json-logger==0.1.9
diff --git a/src/emailservice/requirements.txt b/src/emailservice/requirements.txt
index 65e7717..6a763b2 100644
--- a/src/emailservice/requirements.txt
+++ b/src/emailservice/requirements.txt
@@ -1,41 +1,29 @@
-asn1crypto==0.24.0
-cachetools==2.1.0
-certifi==2018.8.24
-cffi==1.11.5
-chardet==3.0.4
-configparser==3.5.0
-cryptography==2.3.1
-entrypoints==0.2.3
-enum34==1.1.6
-futures==3.1.1
-google-api-core==1.6.0
-google-auth==1.6.1
-google-cloud-core==0.29.0
-googleapis-common-protos==1.5.3
-grpc-google-iam-v1==0.11.4
-grpcio==1.16.1
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile --output-file requirements.txt requirements.in
+#
+cachetools==3.0.0         # via google-auth
+certifi==2018.11.29       # via requests
+chardet==3.0.4            # via requests
+google-api-core[grpc]==1.6.0
+google-auth==1.6.2        # via google-api-core
+google-cloud-core==0.29.1  # via google-cloud-trace
+google-cloud-trace==0.20.2  # via opencensus
+googleapis-common-protos==1.5.5  # via google-api-core
 grpcio-health-checking==1.12.1
-grpcio-tools==1.12.1
-idna==2.7
-ipaddress==1.0.22
-jeepney==0.4
-Jinja2==2.10
-keyring==15.1.0
-keyrings.alt==3.1
-MarkupSafe==1.0
+grpcio==1.16.1
+idna==2.8                 # via requests
+jinja2==2.10
+markupsafe==1.1.0         # via jinja2
 opencensus[stackdriver]==0.1.10
-protobuf==3.6.1
-pyasn1==0.4.4
-pyasn1-modules==0.2.2
-pycairo==1.17.1
-pycparser==2.19
-pycrypto==2.6.1
-PyGObject==3.30.1
+protobuf==3.6.1           # via google-api-core, googleapis-common-protos, grpcio-health-checking
+pyasn1-modules==0.2.3     # via google-auth
+pyasn1==0.4.5             # via pyasn1-modules, rsa
 python-json-logger==0.1.9
-pytz==2018.5
-pyxdg==0.26
-requests==2.20.0
-rsa==4.0
-SecretStorage==3.1.0
-six==1.11.0
-urllib3==1.23
+pytz==2018.9              # via google-api-core
+requests==2.21.0          # via google-api-core
+rsa==4.0                  # via google-auth
+six==1.12.0               # via google-api-core, google-auth, grpcio, protobuf
+urllib3==1.24.1           # via requests
diff --git a/src/loadgenerator/requirements.in b/src/loadgenerator/requirements.in
new file mode 100644
index 0000000..0b66c0a
--- /dev/null
+++ b/src/loadgenerator/requirements.in
@@ -0,0 +1 @@
+locustio==0.8.1
diff --git a/src/loadgenerator/requirements.txt b/src/loadgenerator/requirements.txt
index fa77c1c..ac69aca 100644
--- a/src/loadgenerator/requirements.txt
+++ b/src/loadgenerator/requirements.txt
@@ -1,2 +1,23 @@
+#
+# This file is autogenerated by pip-compile
+# To update, run:
+#
+#    pip-compile --output-file requirements.txt requirements.in
+#
+certifi==2018.11.29       # via requests
+chardet==3.0.4            # via requests
+click==7.0                # via flask
+flask==1.0.2              # via locustio
+gevent==1.4.0             # via locustio
+greenlet==0.4.15          # via gevent
+idna==2.8                 # via requests
+itsdangerous==1.1.0       # via flask
+jinja2==2.10              # via flask
 locustio==0.8.1
-pyzmq==17.0.0
+markupsafe==1.1.0         # via jinja2
+msgpack-python==0.5.6     # via locustio
+pyzmq==17.0.0             # via locustio
+requests==2.21.0          # via locustio
+six==1.12.0               # via locustio
+urllib3==1.24.1           # via requests
+werkzeug==0.14.1          # via flask