diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6d1b50f2f665313657fcf3a63569fbb498e3d314..7da90c38194d98caaaccfbfdf0b8b3fc11b2b2db 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -26,7 +26,7 @@ artifacts:
   stage: build
   script:
   - ./install-font-debian.sh
-  - printf "%s" $CI_BUILD_REF | cut -c1-8 > version.tex
+  - printf "\providecommand{\version}{%s}" $CI_BUILD_REF | cut -c1-8 > version.tex
   - ./build.sh
   - mv dist/*.pdf .
   artifacts:
diff --git a/main.tex b/main.tex
index fd028f04547295a009b670bb865e8b7ccf302cef..0b1168fdbc935e979c81789cbd851670a0d10bc2 100644
--- a/main.tex
+++ b/main.tex
@@ -2,6 +2,7 @@
 
 \documentclass{beamer}
 
+\input{version}
 \input{preamble}
 
 \begin{document}
diff --git a/preamble.tex b/preamble.tex
index c734272285d8a0bc96886a37ac5a5e59d58ad858..93ab60e9561e5a034119cad47a1d3fc1a84b2815 100644
--- a/preamble.tex
+++ b/preamble.tex
@@ -4,7 +4,7 @@
 
 \subtitle{Discussion}
 
-\date{Built from \emph{\input{version}} on \today}
+\date{Built from \href{https://git.dbogatov.org/bu/PathORAM-Talk/commit/\version}{\emph{\version}} on \today}
 
 \author{Dmytro Bogatov \\ dmytro@bu.edu}
 
diff --git a/version.tex b/version.tex
index dfd54184085f53a8138db26c247c67e0dd454b9f..803c611fff97fc10a4534432b6e4a576c8503cda 100644
--- a/version.tex
+++ b/version.tex
@@ -1 +1 @@
-local-dev
+\providecommand{\version}{local-dev}