diff --git a/.gitignore b/.gitignore
index 7577c13..d00b033 100644
--- a/.gitignore
+++ b/.gitignore
@@ -370,6 +370,9 @@ TSWLatexianTemp*
 # Latexindent
 *.bak[0-9]*
 
+# list of codeblocks
+*.loc
+
 # REVTeX puts footnotes in the bibliography by default, unless the nofootinbib
 # option is specified. Footnotes are the stored in a file with suffix Notes.bib.
 # Uncomment the next line to have this generated file ignored.
diff --git a/tex/algoslides.cls b/tex/algoslides.cls
index 4f747d9..5225344 100644
--- a/tex/algoslides.cls
+++ b/tex/algoslides.cls
@@ -56,7 +56,6 @@
 \RequirePackage{babel}
 \RequirePackage{float}
 \RequirePackage{fontawesome5}
-\PassOptionsToPackage{babel}{csquotes}
 \RequirePackage{csquotes}
 \RequirePackage{media9}
 \RequirePackage{animate}
@@ -67,7 +66,7 @@
 \RequirePackage{listings}
 % \RequirePackage[style=numeric]{biblatex}
 \RequirePackage{amsmath, amsthm, amssymb}
-\RequirePackage[squaren]{SIunits}
+\RequirePackage{siunitx}
 \RequirePackage{standalone}
 \RequirePackage[straightvoltages]{circuitikz}
 \RequirePackage{caption}[2013/01/01] % needs v3.3 or newer