diff --git a/examples/binned_analysis.py b/examples/binned_analysis.py
index fd19ee3..5c2da6d 100755
--- a/examples/binned_analysis.py
+++ b/examples/binned_analysis.py
@@ -4,6 +4,9 @@
 # ctatools. If matplotlib is installed, a counts spectrum and an offset
 # histogram will be displayed.
 #
+# Required 3rd party modules:
+# None
+#
 # Copyright (C) 2011 Jurgen Knodlseder
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/examples/pull_histogram.py b/examples/pull_histogram.py
index 27b8868..a4101da 100755
--- a/examples/pull_histogram.py
+++ b/examples/pull_histogram.py
@@ -8,7 +8,7 @@
 # and the pull histogram allows to assess possible biases in the fit
 # parameters and errors.
 #
-# Requirements:
+# Required 3rd party modules:
 # - matplotlib
 # - numpy
 #
diff --git a/examples/sensitivity_pull.py b/examples/sensitivity_pull.py
index 5771a8e..5de9bda 100755
--- a/examples/sensitivity_pull.py
+++ b/examples/sensitivity_pull.py
@@ -5,6 +5,9 @@
 # if available, that can be used for parallel computing on multiple
 # cores/CPUs.
 #
+# Required 3rd party modules:
+# - processing (optional)
+#
 # Copyright (C) 2011 Jurgen Knodlseder
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/examples/ts_distributions.py b/examples/ts_distributions.py
index f506b07..7e510cf 100755
--- a/examples/ts_distributions.py
+++ b/examples/ts_distributions.py
@@ -9,6 +9,9 @@
 # used from within Python. It further illustrates the possibility of
 # parallel computing using the "processing" Python module.
 #
+# Required 3rd party modules:
+# - processing (optional)
+#
 # Copyright (C) 2011 Jurgen Knodlseder
 #
 # This program is free software: you can redistribute it and/or modify
diff --git a/examples/unbinned_analysis.py b/examples/unbinned_analysis.py
index afc7a39..cd389d7 100755
--- a/examples/unbinned_analysis.py
+++ b/examples/unbinned_analysis.py
@@ -4,6 +4,9 @@
 # the ctatools. If matplotlib is installed, the spectrum will be displayed
 # on the screen.
 #
+# Required 3rd party modules:
+# None
+#
 # Copyright (C) 2011 Jurgen Knodlseder
 #
 # This program is free software: you can redistribute it and/or modify