diff --git a/config/dpkg/changelog b/config/dpkg/changelog
index abecb0c1dd..ed028a7235 100644
--- a/config/dpkg/changelog
+++ b/config/dpkg/changelog
@@ -2,4 +2,4 @@ python-plaso (1.3.1-1) unstable; urgency=low
 
   * Auto-generated
 
- -- Log2Timeline <log2timeline-dev@googlegroups.com>  Sat, 05 Sep 2015 19:18:41 +0200
+ -- Log2Timeline <log2timeline-dev@googlegroups.com>  Tue, 15 Sep 2015 07:16:33 +0200
diff --git a/plaso/__init__.py b/plaso/__init__.py
index 45a51231c4..7628d33351 100644
--- a/plaso/__init__.py
+++ b/plaso/__init__.py
@@ -3,7 +3,7 @@
 __version__ = '1.3.1'
 
 VERSION_DEV = True
-VERSION_DATE = '20150905'
+VERSION_DATE = '20150915'
 
 
 def GetVersion():
diff --git a/utils/common.sh b/utils/common.sh
index 94496ef505..5ba11dd02c 100755
--- a/utils/common.sh
+++ b/utils/common.sh
@@ -205,9 +205,11 @@ linting_is_correct_remote_origin()
 }
 
 # Function to check if the linting is correct.
-# Version for usage with remote upstream
-linting_is_correct_remote_upstream()
+# Version for usage with a remote git repository as the diffbase.
+linting_is_correct_remote_diffbase()
 {
+  DIFFBASE=$1;
+
   # Determine the current pylint version.
   PYLINT_VERSION=`pylint --version 2> /dev/null | awk '/pylint/ {print $2}' | rev | cut -c2- | rev`;
 
@@ -226,7 +228,7 @@ linting_is_correct_remote_upstream()
   LINTER="pylint --rcfile=utils/pylintrc";
   RESULT=${TRUE};
 
-  FILES=`git diff --name-only upstream/master | grep "\.py$"`;
+  FILES=`git diff --name-only ${DIFFBASE} | grep "\.py$"`;
 
   for FILE in ${FILES};
   do
diff --git a/utils/review.sh b/utils/review.sh
index 8042429f37..e97582e56c 100755
--- a/utils/review.sh
+++ b/utils/review.sh
@@ -93,11 +93,13 @@ done
 
 if test ${SHOW_HELP} -ne 0;
 then
-  echo "Usage: ./${SCRIPTNAME} [--nobrowser] [--noclfile]";
+  echo "Usage: ./${SCRIPTNAME} [--diffbase DIFFBASE] [--help] [--nobrowser] [--noclfile]";
   echo "";
   echo "  --diffbase: the name of the branch to use as diffbase for the CL.";
   echo "              The default is upstream/master";
   echo "";
+  echo "  --help: shows this help.";
+  echo "";
   echo "  --nobrowser: forces upload.py not to open a separate browser";
   echo "               process to obtain OAuth2 credentials for Rietveld";
   echo "               (https://codereview.appspot.com).";
@@ -165,7 +167,7 @@ then
     fi
   fi
 
-  if ! linting_is_correct_remote_upstream;
+  if ! linting_is_correct_remote_diffbase ${DIFFBASE};
   then
     echo "Review aborted - fix the issues reported by the linter.";
 
diff --git a/utils/run_linter.sh b/utils/run_linter.sh
index 7958e85b57..7eac685149 100755
--- a/utils/run_linter.sh
+++ b/utils/run_linter.sh
@@ -4,6 +4,9 @@
 EXIT_FAILURE=1;
 EXIT_SUCCESS=0;
 
+DIFFBASE="upstream/master";
+SHOW_HELP=0;
+
 if ! test -f "utils/common.sh";
 then
   echo "Unable to find common scripts (utils/common.sh).";
@@ -15,6 +18,38 @@ fi
 # Exports GIT_URL and PROJECT_NAME.
 . utils/common.sh
 
+while test $# -gt 0;
+do
+  case $1 in
+  --diffbase )
+    shift;
+    DIFFBASE=$1;
+    shift;
+    ;;
+
+  -h | --help )
+    SHOW_HELP=1;
+    shift;
+    ;;
+
+  *)
+    ;;
+  esac
+done
+
+if test ${SHOW_HELP} -ne 0;
+then
+  echo "Usage: ./${SCRIPTNAME} [--diffbase DIFFBASE] [--help]";
+  echo "";
+  echo "  --diffbase: the name of the branch to use as diffbase for the CL.";
+  echo "              The default is upstream/master";
+  echo "";
+  echo "  --help: shows this help.";
+  echo "";
+
+  exit ${EXIT_SUCCESS};
+fi
+
 if ! linting_is_correct_remote_origin;
 then
   echo "Linting aborted - fix the reported issues.";
@@ -36,7 +71,7 @@ then
   fi
   git fetch upstream;
 
-  if ! linting_is_correct_remote_upstream;
+  if ! linting_is_correct_remote_diffbase ${DIFFBASE};
   then
     echo "Linting aborted - fix the reported issues.";
 
diff --git a/utils/update.sh b/utils/update.sh
index e409452a9c..f6ab967a09 100755
--- a/utils/update.sh
+++ b/utils/update.sh
@@ -68,7 +68,7 @@ fi
 
 if test -z "${CL_NUMBER}";
 then
-  echo "Usage: ./${SCRIPTNAME} [--nobrowser] [CL_NUMBER]";
+  echo "Usage: ./${SCRIPTNAME} [--diffbase DIFFBASE] [--help] [--nobrowser] [CL_NUMBER]";
   echo "";
   echo "  CL_NUMBER: optional change list (CL) number that is to be updated.";
   echo "             If no CL number is provided the value is read from the";
@@ -77,6 +77,8 @@ then
   echo "  --diffbase: the name of the branch to use as diffbase for the CL.";
   echo "              The default is upstream/master";
   echo "";
+  echo "  --help: shows this help.";
+  echo "";
   echo "  --nobrowser: forces upload.py not to open a separate browser";
   echo "               process to obtain OAuth2 credentials for Rietveld";
   echo "               (https://codereview.appspot.com).";
@@ -131,7 +133,7 @@ then
     fi
   fi
 
-  if ! linting_is_correct_remote_upstream;
+  if ! linting_is_correct_remote_diffbase ${DIFFBASE};
   then
     echo "Update aborted - fix the issues reported by the linter.";