diff --git a/bootstrap/exercises/exercises01.tex b/bootstrap/exercises/exercises01.tex
index b5065de..1ad1fd2 100644
--- a/bootstrap/exercises/exercises01.tex
+++ b/bootstrap/exercises/exercises01.tex
@@ -15,7 +15,7 @@
 \else
 \newcommand{\stitle}{}
 \fi
-\header{{\bfseries\large Exercise 9\stitle}}{{\bfseries\large Bootstrap}}{{\bfseries\large December 5th, 2017}}
+\header{{\bfseries\large Exercise 9\stitle}}{{\bfseries\large Bootstrap}}{{\bfseries\large November 20th, 2018}}
 \firstpagefooter{Prof. Dr. Jan Benda}{Phone: 29 74573}{Email:
 jan.benda@uni-tuebingen.de}
 \runningfooter{}{\thepage}{}