diff --git a/doc/conf.py b/doc/conf.py
index 938282d0a2..4957a0e430 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -91,6 +91,14 @@ def get_version():
 # "release" is used for LaTeX build
 release = version
 
+import sphinx
+copyright += ', Sphinx ' + sphinx.__version__
+
+import sphinx_rtd_theme
+copyright += ', theme ' + sphinx_rtd_theme.__version__
+
+import docutils
+copyright += ', docutils ' + docutils.__version__
 
 
 # The language for content autogenerated by Sphinx.