diff --git a/crossbar-requirements.txt b/crossbar-requirements.txt
new file mode 100644
index 000000000..7787f0be6
--- /dev/null
+++ b/crossbar-requirements.txt
@@ -0,0 +1,8 @@
+-r requirements.txt
+crossbar==17.12.1
+pexpect==4.3.1
+pyserial>=3.3
+pyudev==0.21.0
+xmodem>=0.4.5
+# For crossbar
+idna==2.5
\ No newline at end of file
diff --git a/dev-requirements.txt b/dev-requirements.txt
index f3a134629..0868bd40b 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,22 +1,12 @@
-PyYAML==3.12
-attrs==17.4.0
-crossbar==17.12.1
-pexpect==4.3.1
-pyModbusTCP==0.1.5
-pyserial>=3.3
-pysnmp==4.4.4
-pysnmp-mibs==0.1.6
-pytest==3.4.0
 pytest-cache==1.0
 pytest-cov==2.5.1
 pytest-isort==0.1.0
 pytest-mock==1.6.3
 pytest-pylint==0.7.1
 pytest-runner==3.0
-onewire>=0.2
-pyudev==0.21.0
 yapf==0.20.1
-requests==2.18.4
-autobahn==17.10.1
-xmodem>=0.4.5
 -r doc-requirements.txt
+-r crossbar-requirements.txt
+-r onewire-requirements.txt
+-r modbus-requirements.txt
+-r snmp-requirements.txt
\ No newline at end of file
diff --git a/modbus-requirements.txt b/modbus-requirements.txt
new file mode 100644
index 000000000..9384460e6
--- /dev/null
+++ b/modbus-requirements.txt
@@ -0,0 +1 @@
+pyModbusTCP==0.1.5
\ No newline at end of file
diff --git a/onewire-requirements.txt b/onewire-requirements.txt
new file mode 100644
index 000000000..6f69cb6b0
--- /dev/null
+++ b/onewire-requirements.txt
@@ -0,0 +1 @@
+onewire==0.2
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 000000000..c31d4ee47
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,10 @@
+attrs==17.4.0
+jinja2==2.10
+pexpect==4.3.1
+pyserial==3.4
+pytest==3.4.0
+pyudev==0.21.0
+requests==2.18.4
+xmodem==0.4.5
+autobahn==17.10.1
+PyYAML==3.12
\ No newline at end of file
diff --git a/setup.py b/setup.py
index ade39437a..f246d6724 100755
--- a/setup.py
+++ b/setup.py
@@ -17,7 +17,6 @@
     python_requires='>=3.4',
     extras_require={
         'onewire': ['onewire>=0.2'],
-        'coordinator': ['crossbar', 'idna==2.5'],
         'snmp': ['pysnmp', 'pysnmp-mibs'],
         'modbus': ['pyModbusTCP'],
     },
diff --git a/snmp-requirements.txt b/snmp-requirements.txt
new file mode 100644
index 000000000..7e721c730
--- /dev/null
+++ b/snmp-requirements.txt
@@ -0,0 +1,2 @@
+pysnmp==4.4.4
+pysnmp-mibs==0.1.6
\ No newline at end of file