diff --git a/FOSS_course/compile.sh b/FOSS_course/compile.sh
index a71d4564ec04a9d1086d14acc9f34aaac04f2d39..98994fc17209800b73164fdeee7c8179891bca64 100755
--- a/FOSS_course/compile.sh
+++ b/FOSS_course/compile.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-pdflatex slides.tex
+pdflatex -shell-escape slides.tex
 bibtex slides
-pdflatex slides.tex
-pdflatex slides.tex
+pdflatex -shell-escape slides.tex
+pdflatex -shell-escape slides.tex
diff --git a/FOSS_course/data/web_os.csv b/FOSS_course/data/web_os.csv
index d52245310aeb61c22e4c84b6c56304bfdfc0dfe7..098231a5320f2669838a7441a73d63a50c7f0be7 100644
--- a/FOSS_course/data/web_os.csv
+++ b/FOSS_course/data/web_os.csv
@@ -1,3 +1,3 @@
 Name,percent
-Unix,70.5
-Windows,29.5
+Unix,71.4
+Windows,28.6
diff --git a/FOSS_course/data/web_servers.csv b/FOSS_course/data/web_servers.csv
index f1b36a9e5f45464a717183c35cd772ec14f63896..677f32a54e46bda108b267e7454ca0656e391bd6 100644
--- a/FOSS_course/data/web_servers.csv
+++ b/FOSS_course/data/web_servers.csv
@@ -1,6 +1,6 @@
 Name,percent
-Apache,44.0
-Nginx,30.7
-Cloudflare Server,11.2
-Microsoft-IIS,8.2
-other,5.9
+Apache,40.5
+Nginx,31.7
+Cloudflare Server,13.2
+Microsoft-IIS,7.8
+other,5.8
diff --git a/FOSS_course/slides.pdf b/FOSS_course/slides.pdf
index 3832b1a37d7af35c71f2c247399cdada0aa9af60..c8ac8f3a5fa4538bb714df5c4f5a0b8c30aab77c 100644
--- a/FOSS_course/slides.pdf
+++ b/FOSS_course/slides.pdf
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:966100fb030e62bf24b230ef00343ad30d311c59a9d4e04fb50b9483c133beac
-size 5161936
+oid sha256:58c055ffeb6faab7edbf24a5fd1d6918fb7287219ee26f1e6bf517ccf9ad4479
+size 5157190
diff --git a/FOSS_course/slides.tex b/FOSS_course/slides.tex
index 03444b50f68518c71e176781046784232ca99e50..236806249b6d788d82b1c58fd6f91840d3beb1f3 100755
--- a/FOSS_course/slides.tex
+++ b/FOSS_course/slides.tex
@@ -72,7 +72,7 @@
 				\textcolor{ldorange}{$\sim$1970-1980:}
 				\begin{itemize}
 					\item Increasingly easy to withold control (e.g. binary-only distribution)
-					\item United States vs. IBM (1969): “Bundled Software is anticompetitive”
+					\item United States vs. IBM (1969, dropped 1982): “Bundled Software is anticompetitive”
 					\item Computer Software Copyright Act (1980): “Software is patentable”
 				\end{itemize}
 			\end{frame}
@@ -193,6 +193,11 @@
 				% Proprietary Software is Often Malware https://www.gnu.org/proprietary/
 			\end{frame}
 			\begin{frame}{Sustainability}
+
+				\begin{center}
+					“the quality of being able to continue over a period of time“
+				\end{center}
+
 				The Software:
 				\begin{itemize}
 					\item depends on no single entity for its continuity.
@@ -335,7 +340,7 @@
 						\vspace{-0.75em}
 						\centering\tiny
 							\DTLpiechart{radius=0.235\textheight,variable=\quantity,innerlabel={\DTLpiepercent\%},outerlabel=\name,cutaway={1-2}}{server}{\name=Name,\quantity=percent}
-							\caption{Web Server Market Share 2019-10-04 via \href{http://w3techs.com/technologies/overview/web_server/all}{w3techs}}
+							\caption{Web Server Market Share 2020-02-26 via \href{http://w3techs.com/technologies/overview/web_server/all}{w3techs}}
 						\end{figure}
 					\column{0.5\linewidth}
 						\begin{figure}[htbp]
@@ -344,7 +349,7 @@
 	\DTLsetpiesegmentcolor{1}{green!40}
 	\DTLsetpiesegmentcolor{2}{red!40}
 							\DTLpiechart{radius=0.265\textheight,variable=\quantity,innerlabel={\DTLpiepercent\%},outerlabel=\name,cutaway={2}}{os}{\name=Name,\quantity=percent}
-							\caption{Website OS Market Share 2019-10-04 via \href{http://w3techs.com/technologies/overview/operating_system/all}{w3techs}}
+							\caption{Website OS Market Share 2020-02-26 via \href{http://w3techs.com/technologies/overview/operating_system/all}{w3techs}}
 						\end{figure}
 				\end{columns}
 			\end{frame}
@@ -385,7 +390,7 @@
 					\caption{\copyright Red Hat, Inc.}
 				\end{figure}
 				\begin{itemize}
-					\item Founded 1993 
+					\item Founded 1993, subsidiary of IBM since 2019
 					\item 2015--2018 stock price $\mathrm{\upbeta_{RHT}=1.16}$ (e.g. $\mathrm{\upbeta_{MSFT}=1.22}$)
 					\item Very diverse open source products, e.g. OpenStack, RHEL, CloudForms
 				\end{itemize}
@@ -431,7 +436,7 @@
 					\item Come to the next “Linux Days” events:
 					\textcolor{lg}{\url{http://thealternative.ch/}}
 					\item Join the next “Stammtisch”:\\
-					\textcolor{lg}{18:00 Thursday, March 12 - Learning Spaces on the E Floor of ETH Building CHN Universitätestrasse 16}
+					\textcolor{lg}{18:00 Thursday, March 5 - Katholische Hochschulgemeinde Zürich AKI, 2nd floor, Hirschengraben 86, 8001}
 					\item Give us feedback!\\
 					\textcolor{lg}{\url{https://feedback.thealternative.ch/}}
 				\end{itemize}