diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f3da48e5eb4be744c6630e93fbf5b1fe8dfc452d..bc009b2ae0f9573b421c92495d584758766f8465 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,4 +1,4 @@
-image: texlive/texlive
+image: texlive/texlive:latest
 
 LuaLaTeX:
     script: 
@@ -7,6 +7,11 @@ LuaLaTeX:
         - latexmk -pdflua ctufit-thesis.tex
         - latexmk -pdflua ctufit-thesis-en.tex
         - latexmk -pdflua ctufit-thesis-sk.tex
+    artifacts:
+        paths:
+            - ctufit-thesis.pdf
+            - ctufit-thesis-en.pdf
+            - ctufit-thesis-sk.pdf
 
 XeLaTeX:
     script: 
@@ -15,6 +20,11 @@ XeLaTeX:
         - latexmk -pdfxe ctufit-thesis.tex
         - latexmk -pdfxe ctufit-thesis-en.tex
         - latexmk -pdfxe ctufit-thesis-sk.tex
+    artifacts:
+        paths:
+            - ctufit-thesis.pdf
+            - ctufit-thesis-en.pdf
+            - ctufit-thesis-sk.pdf
 
 pdfLaTeX:
     script: 
diff --git a/ctufit-thesis.cls b/ctufit-thesis.cls
index 815548fcddba0dd106e9f486a86bf5ad1ea5188b..3769f46e802625ee4c670a10922c6b05a0bafdda 100644
--- a/ctufit-thesis.cls
+++ b/ctufit-thesis.cls
@@ -267,13 +267,6 @@
 {}
 {}
 
-  
-% \titleformat{\subsection}
-%   {\frontsubsectionfont\color{heading}}{{{\color{black}\thesubsection}}}{1em}{}[\vskip -1em]
-  
-% \titleformat{\subsubsection}
-%   {\frontsubsubsectionfont\color{heading}}{{{\color{black}\thesubsubsection}}}{1em}{}[\vskip -1em]
-
 % \makeatletter
 \@openrightfalse
 % \makeatother
@@ -288,6 +281,9 @@
 \def\frontsectionfont{\large\bfseries}
 \def\frontsubsectionfont{\large}
 \def\frontsubsubsectionfont{\bfseries}
+
+\setcounter{secnumdepth}{4} % numbering sections; 4: subsubsection
+\setcounter{tocdepth}{4} % table of content depth; 4: subsubsection
 % frontmatter headings end
 
 % frontmatter pseudochapters: named part without printing actual chapter heading
@@ -308,7 +304,7 @@
 \renewcommand*{\l@chapter}[2]{%
   \stdl@chapter{\textcolor{heading}{#1}}{\textcolor{heading}{#2}}}
 % \makeatother
-% table of contents colored chapters end
+% table of contents coloured chapters end
 
 % headers and footers
 % \makeatletter
@@ -529,6 +525,7 @@
 	}{}%
 	\@ifpackageloaded{minted}{%
 		\DeclareRobustCommand{\listingscaption}{\thectufitlistinglabel}%
+        		\SetupFloatingEnvironment{listing}{name=\listingscaption}
 		\DeclareRobustCommand{\listoflistingscaption}{\thectufitlollabel}%
 		\DeclareRobustCommand{\listlistingname}{\thectufitlollabel}%
 		\DeclareRobustCommand{\thectufitlistingscommand}{\listoflistings}%
diff --git a/ctufit-thesis.tex b/ctufit-thesis.tex
index 7cd4c2f25e12a6ff39ac66e91ccdc9b89121c0a6..626f4676e7d63cbbbadcec32bacc08a0a93ba064 100644
--- a/ctufit-thesis.tex
+++ b/ctufit-thesis.tex
@@ -82,10 +82,6 @@
 
 \RequirePackage{pdfpages}[2020/01/28]
 
-\setcounter{secnumdepth}{4} % numbering sections; 4: subsubsection
-
-
-
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % CUSTOMIZATION of this template END
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%