diff --git a/requirements_dev.txt b/requirements_dev.txt
index f7dfaaf..6ff95a8 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -1,17 +1,17 @@
 https://storage.googleapis.com/protein-design-ipd-public/wheelhouse/pyrosetta-2017.48.post0.dev0%2B93.fordas.dev.f126926bdc8-cp35-cp35m-linux_x86_64.whl
-pip
-bumpversion
-wheel
-watchdog
-flake8
-tox
-coverage
-Sphinx
-cryptography
-PyYAML
-pytest
-pytest-runner
-numpy
-homog
-tqdm
+pip==9.0.1
+bumpversion==0.5.3
+wheel==0.30.0
+watchdog==0.8.3
+flake8==3.5.0
+tox==2.9.1
+coverage==4.4.2
+Sphinx==1.6.6
+cryptography==2.1.4
+PyYAML==3.12
+pytest==3.3.2
+pytest-runner==3.0
+numpy==1.14.0
+homog==0.1.6
+tqdm==4.19.5
 
diff --git a/requirements_rtd.txt b/requirements_rtd.txt
index 6c512b0..c8f4afd 100644
--- a/requirements_rtd.txt
+++ b/requirements_rtd.txt
@@ -1,15 +1,15 @@
-pip
-bumpversion
-wheel
-watchdog
-flake8
-tox
-coverage
-Sphinx
-cryptography
-PyYAML
-pytest
-pytest-runner
-numpy
-homog
-tqdm
+pip==9.0.1
+bumpversion==0.5.3
+wheel==0.30.0
+watchdog==0.8.3
+flake8==3.5.0
+tox==2.9.1
+coverage==4.4.2
+Sphinx==1.6.6
+cryptography==2.1.4
+PyYAML==3.12
+pytest==3.3.2
+pytest-runner==3.0
+numpy==1.14.0
+homog==0.1.6
+tqdm==4.19.5