diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f1f2921..e0a6788 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -29,6 +29,7 @@ final_report:
       - include/references.bib
       - report.tex
       - content/*.tex
+      - graphics/*.tex
 
 rro:
   stage: rro
diff --git a/Makefile b/Makefile
index bd5b662..f9da5db 100644
--- a/Makefile
+++ b/Makefile
@@ -28,7 +28,7 @@ $(TARGET): $(SOURCE) $(GRPH_TARGET) $(CONTENT_SOURCE)
 	$(LATEXMK) $(LATEXMK_OPTS) $(LATEXMK_TARGET) $<
 
 $(GRPH_DIR)/%.pdf: $(GRPH_DIR)/%.tex
-	$(LATEXMK) -lualatex -outdir=$(GRPH_DIR) $(LATEXMK_OPTS) $<
+	$(LATEXMK) $(LATEXMK_TARGET) -outdir=$(GRPH_DIR) $(LATEXMK_OPTS) $<
 
 .PHONY: clean Clean
 clean: 
diff --git a/graphics/design_flow.tex b/graphics/design_flow.tex
index f1acd80..af82e71 100644
--- a/graphics/design_flow.tex
+++ b/graphics/design_flow.tex
@@ -11,7 +11,7 @@ draw=black!50, thick, font=\footnotesize, fill=white},
     \draw[fill=lightgray] (-1.7cm , 0.5cm) rectangle (5cm, -2.8cm);
     \draw[fill=lightgray] (-1.7cm,-3cm) rectangle (5cm, -7.2cm);
     \node (pd) {Problem Description};
-    \node (sp)[below=1 of pd]  {System\\Requirements};
+    \node (sp)[below=1 of pd]  {Specifications};
     \node (id)[below=1 of sp]  {Initial Design};
     \node (fs)[below=1 of id]  {Feature Definition};
     \node (ss)[below=1 of fs]  {Feature Selection};
diff --git a/graphics/feature_dependency.tex b/graphics/feature_dependency.tex
index ad3cae6..3c3341a 100644
--- a/graphics/feature_dependency.tex
+++ b/graphics/feature_dependency.tex
@@ -1,16 +1,21 @@
 \documentclass{standalone}
 \usepackage{tikz}
-\usetikzlibrary {arrows.meta,graphs,graphdrawing} \usegdlibrary {layered}
+\usepackage{siltex}
+\usetikzlibrary {arrows.meta,positioning}
 \tikzset{nodes={text height=.7em, text width=1.2cm, align=center,
 draw=black!50, thick, font=\footnotesize, fill=white},
 >={Stealth[round,sep]}, rounded corners, semithick}
 
 \begin{document}
-\begin{tikzpicture}
-    \graph [layered layout, level distance=1.2cm, sibling sep=.5em, sibling distance=1.5cm, sweep crossing minimization] {
-        "Feat. A" -> {"Feat. B", "Feat. C"};
-        "Feat. D" ->[edges=white!99] "Feat. C" -> "Feat. E";
-    };
+\begin{tikzpicture}[on grid, y = 1.5cm, x = 1.8cm]
+    \node (a) {Feature A};
+    \node (d) [right = 1 of a]{Feature D};
+    \node (b) [below = 1 of a]{Feature B};
+    \node (c) [below = 1 of d]{Feature C};
+    \node (e) [below = 1 of c]{Feature E};
+    \path[->] (a) edge (b)
+              (a) edge (c)
+              (c) edge (e);
 \end{tikzpicture}
 \end{document}
 
diff --git a/graphics/test_flow_graph.tex b/graphics/test_flow_graph.tex
index 77def6a..ea9ff02 100644
--- a/graphics/test_flow_graph.tex
+++ b/graphics/test_flow_graph.tex
@@ -1,6 +1,6 @@
 %&tex
 \documentclass{standalone}
-%\usepackage[]{siltex}
+\usepackage{siltex}
 \usepackage{tikz}
 \usetikzlibrary {arrows.meta,graphs,positioning,shapes.geometric}
 \tikzset{nodes={text height=.7em, text width=1.7cm, align=center,
diff --git a/graphics/waterfall.tex b/graphics/waterfall.tex
index 495ee88..a32c462 100644
--- a/graphics/waterfall.tex
+++ b/graphics/waterfall.tex
@@ -1,16 +1,23 @@
 \documentclass{standalone}
 \usepackage{tikz}
-\usetikzlibrary {arrows.meta,graphs,graphdrawing} \usegdlibrary {layered}
+\usepackage{siltex}
+\usetikzlibrary {arrows.meta,positioning}
 \tikzset{nodes={text height=.7em, text width=2.8cm, align=center,
 draw=black!50, thick, font=\footnotesize, fill=white},
 >={Stealth[round,sep]}, rounded corners, semithick}
 
 \begin{document}
 
-\begin{tikzpicture}
-    \graph [layered layout, level distance=1.2cm, sibling sep=.5em, sibling distance=1.5cm, sweep crossing minimization] {
-        pd [as=Problem Description] -> "Specifications" -> "Initial Design" -> "Implementation" -> "Testing";
-    };
+\begin{tikzpicture}[on grid,y=1.2cm,x=3.2cm]
+    \node (pd) {Problem Description};
+    \node (sp)[below=1 of pd]  {Specifications};
+    \node (id)[below=1 of sp]  {Initial Design};
+    \node (im)[below=1 of id]  {Implementation};
+    \node (te)[below=1 of im]  {Testing};
+    \path[->] (pd) edge (sp)
+              (sp) edge (id)
+              (id) edge (im)
+              (im) edge (te);
 \end{tikzpicture}
 \end{document}