diff --git a/COURS/PLSQL.tex b/COURS/PLSQL.tex
index 864f18a..8358b0f 100644
--- a/COURS/PLSQL.tex
+++ b/COURS/PLSQL.tex
@@ -117,8 +117,8 @@
  \par\smallskip}
 
 
-\cachefalse % version prof
-%\cachetrue % version  etudiant
+%\cachefalse % version prof
+\cachetrue % version  etudiant
 
  \makeindex
  
diff --git a/COURS/ProC.tex b/COURS/ProC.tex
index 231aac9..937d5de 100644
--- a/COURS/ProC.tex
+++ b/COURS/ProC.tex
@@ -122,7 +122,7 @@
 \begin{titlepage}
 \begin{center}
 
-\textsc{\Large IUT Informatique Aubière \hfill 2019 - 2020} \\[.5cm]
+\textsc{\Large IUT Informatique Aubière \hfill 2020 - 2021} \\[.5cm]
 
 \hrule