diff --git a/install/linux/devel-py27.txt b/install/linux/devel-py27.txt
index e50ce5b45c5ad53cd1168513835c252aa8a02f6e..9cbf9abc7e9dc86a10ca193be0cf645ff794fe83 100644
--- a/install/linux/devel-py27.txt
+++ b/install/linux/devel-py27.txt
@@ -36,7 +36,7 @@ https://repo.continuum.io/pkgs/free/linux-64/ipython-4.2.0-py27_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/ipython_genutils-0.1.0-py27_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/jbig-2.1-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/jinja2-2.8-py27_1.tar.bz2
-https://repo.continuum.io/pkgs/free/linux-64/jpeg-8d-1.tar.bz2
+https://repo.continuum.io/pkgs/free/linux-64/jpeg-8d-2.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/libblitz-0.10-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/libffi-3.2.1-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/libgfortran-3.0.0-1.tar.bz2
@@ -98,7 +98,7 @@ https://repo.continuum.io/pkgs/free/linux-64/tk-8.5.18-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/toolz-0.8.0-py27_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/tornado-4.4.1-py27_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/traitlets-4.2.2-py27_0.tar.bz2
-https://repo.continuum.io/pkgs/free/linux-64/virtualenv-13.0.1-py27_0.tar.bz2
+https://repo.continuum.io/pkgs/free/linux-64/virtualenv-15.0.3-py27_0.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/vlfeat-0.9.20-1.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/wheel-0.29.0-py27_0.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/x264-20131217-1.tar.bz2
diff --git a/install/linux/devel-py34.txt b/install/linux/devel-py34.txt
index 6b8af6ece38ba68e0cd2911068c0a8549b3511e1..4b9301bce090395f7dc80ccf5bb6892c8c1c4e19 100644
--- a/install/linux/devel-py34.txt
+++ b/install/linux/devel-py34.txt
@@ -35,7 +35,7 @@ https://repo.continuum.io/pkgs/free/linux-64/ipython-4.2.0-py34_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/ipython_genutils-0.1.0-py34_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/jbig-2.1-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/jinja2-2.8-py34_1.tar.bz2
-https://repo.continuum.io/pkgs/free/linux-64/jpeg-8d-1.tar.bz2
+https://repo.continuum.io/pkgs/free/linux-64/jpeg-8d-2.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/libblitz-0.10-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/libffi-3.2.1-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/libgfortran-3.0.0-1.tar.bz2
@@ -93,7 +93,7 @@ https://repo.continuum.io/pkgs/free/linux-64/tk-8.5.18-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/toolz-0.8.0-py34_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/tornado-4.4.1-py34_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/traitlets-4.2.2-py34_0.tar.bz2
-https://repo.continuum.io/pkgs/free/linux-64/virtualenv-13.0.1-py34_0.tar.bz2
+https://repo.continuum.io/pkgs/free/linux-64/virtualenv-15.0.3-py34_0.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/vlfeat-0.9.20-1.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/wheel-0.29.0-py34_0.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/x264-20131217-1.tar.bz2
diff --git a/install/linux/devel-py35.txt b/install/linux/devel-py35.txt
index 483e37c1d2070d0e733f51476fdbdc8d627c53d1..af52fe862e115525cbce096d42d4395d3ee18059 100644
--- a/install/linux/devel-py35.txt
+++ b/install/linux/devel-py35.txt
@@ -34,7 +34,7 @@ https://repo.continuum.io/pkgs/free/linux-64/ipython-4.2.0-py35_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/ipython_genutils-0.1.0-py35_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/jbig-2.1-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/jinja2-2.8-py35_1.tar.bz2
-https://repo.continuum.io/pkgs/free/linux-64/jpeg-8d-1.tar.bz2
+https://repo.continuum.io/pkgs/free/linux-64/jpeg-8d-2.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/libblitz-0.10-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/libffi-3.2.1-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/libgfortran-3.0.0-1.tar.bz2
@@ -92,7 +92,7 @@ https://repo.continuum.io/pkgs/free/linux-64/tk-8.5.18-0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/toolz-0.8.0-py35_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/tornado-4.4.1-py35_0.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/traitlets-4.2.2-py35_0.tar.bz2
-https://repo.continuum.io/pkgs/free/linux-64/virtualenv-13.0.1-py35_0.tar.bz2
+https://repo.continuum.io/pkgs/free/linux-64/virtualenv-15.0.3-py35_0.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/vlfeat-0.9.20-1.tar.bz2
 https://repo.continuum.io/pkgs/free/linux-64/wheel-0.29.0-py35_0.tar.bz2
 https://conda.anaconda.org/conda-forge/linux-64/x264-20131217-1.tar.bz2