diff --git a/cleanthesis.pdf b/cleanthesis.pdf
index fef3a73..7123c60 100644
Binary files a/cleanthesis.pdf and b/cleanthesis.pdf differ
diff --git a/cleanthesis.sty b/cleanthesis.sty
index 710a264..f3ce219 100644
--- a/cleanthesis.sty
+++ b/cleanthesis.sty
@@ -112,8 +112,8 @@
 \setkeys[ct]{cthesis}{bibfile=bib-refs}
 
 % OPTION bibstyle
-% --> values = alphabetic|numeric
-\define@choicekey*[ct]{cthesis}{bibstyle}[\val\bibstylenr]{alphabetic,numeric}[alphabetic]{\def\cthesis@bibstyle{#1}}
+% --> values = alphabetic|numeric|authoryear
+\define@choicekey*[ct]{cthesis}{bibstyle}[\val\bibstylenr]{alphabetic,numeric,authoryear}[alphabetic]{\def\cthesis@bibstyle{#1}}
 \setkeys[ct]{cthesis}{bibstyle=alphabetic}
 
 
diff --git a/cleanthesis.tex b/cleanthesis.tex
index bd30434..98a2846 100644
--- a/cleanthesis.tex
+++ b/cleanthesis.tex
@@ -145,9 +145,10 @@ The default (still) is \texttt{bibtex}.
 Sets the file name of the bibtex file used for the bibliography.
 If this option is not used (defined), the package looks for the default bibliography \texttt{bib-refs.bib}.
 
-\optitem[alphabetic]{bibstyle}{\opt{alphabetic},\opt{numeric}}
+\optitem[alphabetic]{bibstyle}{\opt{alphabetic},\opt{numeric},\opt{authoryear}}
 
-Sets whether to use an \texttt{alphabetic} or a \texttt{numeric} reference style for the bibliography.
+Sets whether to use an \texttt{alphabetic}, a \texttt{numeric}, or an \texttt{authoryear} reference style for the bibliography.
+For further information please check out the biblatex documentation\footnote{\url{http://www.ctan.org/pkg/biblatex}}.
 The default is \texttt{alphabetic}.
 
 \end{optionlist}
diff --git a/thesis-example.pdf b/thesis-example.pdf
index 7fb2849..0e8834d 100644
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