diff --git a/client/sources-linux/buildenv.sh b/client/sources-linux/buildenv.sh
index 8bba7023..a6f071e5 100755
--- a/client/sources-linux/buildenv.sh
+++ b/client/sources-linux/buildenv.sh
@@ -4,10 +4,10 @@ export XID=`id -u`
 
 # VERSIONS /MAY/ BE UPDATED (In case of vulnerabilites)
 OPENSSL_SRC="http://http.debian.net/debian/pool/main/o/openssl/openssl_1.0.2j.orig.tar.gz"
-ZLIB_SRC="http://zlib.net/zlib-1.2.8.tar.gz"
+ZLIB_SRC="http://zlib.net/zlib-1.2.10.tar.gz"
 SQLITE_SRC="http://www.sqlite.org/2016/sqlite-autoconf-3150200.tar.gz"
 LIBFFI_SRC="http://http.debian.net/debian/pool/main/libf/libffi/libffi_3.2.1.orig.tar.gz"
-PYTHON_SRC="https://www.python.org/ftp/python/2.7.12/Python-2.7.12.tgz"
+PYTHON_SRC="https://www.python.org/ftp/python/2.7.13/Python-2.7.13.tgz"
 PKGCONFIG_SRC="https://pkg-config.freedesktop.org/releases/pkg-config-0.29.1.tar.gz"
 XZ_SRC="http://tukaani.org/xz/xz-5.2.2.tar.gz"
 
@@ -111,8 +111,8 @@ export PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin
 /bin/sh -c "apt-get --force-yes -y remove make << /dev/null"
 cd /usr/src
 
-tar zxf zlib-1.2.8.tar.gz
-cd /usr/src/zlib-1.2.8
+tar zxf zlib-1.2.10.tar.gz
+cd /usr/src/zlib-1.2.10
 ./configure --prefix=/usr --static; make; make install
 cd /usr/src
 
@@ -146,8 +146,8 @@ cd /usr/src/sqlite-autoconf-3150200
 make; make install
 cd /usr/src
 
-tar zxf Python-2.7.12.tgz
-cd /usr/src/Python-2.7.12
+tar zxf Python-2.7.13.tgz
+cd /usr/src/Python-2.7.13
 ./configure --prefix=/usr \
   --without-doc-strings --without-tsc --without-pymalloc \
   --with-fpectl --with-ensurepip=install --with-signal-module \
@@ -303,8 +303,8 @@ export PATH=/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin
 /bin/sh -c "apt-get --force-yes -y remove make << /dev/null"
 cd /usr/src
 
-tar zxf zlib-1.2.8.tar.gz
-cd /usr/src/zlib-1.2.8
+tar zxf zlib-1.2.10.tar.gz
+cd /usr/src/zlib-1.2.10
 ./configure --prefix=/usr --static; make; make install
 cd /usr/src
 
@@ -338,8 +338,8 @@ cd /usr/src/sqlite-autoconf-3150200
 make; make install
 cd /usr/src
 
-tar zxf Python-2.7.12.tgz
-cd /usr/src/Python-2.7.12
+tar zxf Python-2.7.13.tgz
+cd /usr/src/Python-2.7.13
 ./configure --prefix=/usr \
   --without-doc-strings --without-tsc --without-pymalloc \
   --with-fpectl --with-ensurepip=install --with-signal-module \
diff --git a/client/sources/buildenv.sh b/client/sources/buildenv.sh
index 9319920f..a1c78fba 100755
--- a/client/sources/buildenv.sh
+++ b/client/sources/buildenv.sh
@@ -8,13 +8,13 @@ SELF=`readlink -f $0`
 CWD=`dirname $0`
 SOURCES=`readlink -f $CWD/../../`
 
-PYTHON64="https://www.python.org/ftp/python/2.7.12/python-2.7.12.amd64.msi"
-PYTHON32="https://www.python.org/ftp/python/2.7.12/python-2.7.12.msi"
+PYTHON64="https://www.python.org/ftp/python/2.7.13/python-2.7.13.amd64.msi"
+PYTHON32="https://www.python.org/ftp/python/2.7.13/python-2.7.13.msi"
 PYTHONVC="https://download.microsoft.com/download/7/9/6/796EF2E4-801B-4FC4-AB28-B59FBF6D907B/VCForPython27.msi"
-PYCRYPTO32="http://www.voidspace.org.uk/downloads/pycrypto26/pycrypto-2.6.win32-py2.7.exe"
-PYCRYPTO64="http://www.voidspace.org.uk/downloads/pycrypto26/pycrypto-2.6.win-amd64-py2.7.exe"
+# PYCRYPTO32="http://www.voidspace.org.uk/downloads/pycrypto26/pycrypto-2.6.win32-py2.7.exe"
+# PYCRYPTO64="http://www.voidspace.org.uk/downloads/pycrypto26/pycrypto-2.6.win-amd64-py2.7.exe"
 
-PACKAGES="rpyc pyaml rsa pefile image rsa netaddr pypiwin32 win_inet_pton netaddr tinyec uptime"
+PACKAGES="rpyc pyaml rsa pefile image rsa netaddr pypiwin32 win_inet_pton netaddr tinyec uptime pycrypto"
 
 BUILDENV=${1:-`pwd`/buildenv}
 
@@ -57,14 +57,14 @@ done
 WINEPREFIX=$WINE32 wineserver -k
 
 [ ! -f $WINE32/drive_c/.python ] && \
-    WINEPREFIX=$WINE32 msiexec /i Y:\\python-2.7.12.msi /q && \
+    WINEPREFIX=$WINE32 msiexec /i Y:\\python-2.7.13.msi /q && \
     touch $WINE32/drive_c/.python
 
 WINEPREFIX=$WINE32 wineboot -r
 WINEPREFIX=$WINE32 wineserver -k
 
 [ ! -f $WINE64/drive_c/.python ] && \
-    WINEPREFIX=$WINE64 msiexec /i Y:\\python-2.7.12.amd64.msi /q && \
+    WINEPREFIX=$WINE64 msiexec /i Y:\\python-2.7.13.amd64.msi /q && \
     touch $WINE64/drive_c/.python
 
 WINEPREFIX=$WINE64 wineboot -r
@@ -89,8 +89,8 @@ for prefix in $WINE32 $WINE64; do
     WINEPREFIX=$prefix wine C:\\Python27\\python -O -m pip install --upgrade --no-binary :all: psutil
 done
 
-WINEPREFIX=$WINE32 wine C:\\Python27\\python.exe -m easy_install -Z $PYCRYPTO32
-WINEPREFIX=$WINE64 wine C:\\Python27\\python.exe -m easy_install -Z $PYCRYPTO64
+# WINEPREFIX=$WINE32 wine C:\\Python27\\python.exe -m easy_install -Z $PYCRYPTO32
+# WINEPREFIX=$WINE64 wine C:\\Python27\\python.exe -m easy_install -Z $PYCRYPTO64
 
 cat >$WINE32/python.sh <<EOF
 #!/bin/sh