diff --git a/.github/tl_packages b/.github/tl_packages
new file mode 100644
index 0000000..e42217c
--- /dev/null
+++ b/.github/tl_packages
@@ -0,0 +1,97 @@
+snapshot
+geometry
+keyval
+ifvtex
+iftex
+textcomp
+fix-cm
+ulem
+hyperref
+kvsetkeys
+kvdefinekeys
+pdfescape
+ltxcmds
+pdftexcmds
+infwarerr
+hycolor
+auxhook
+nameref
+refcount
+gettitlestring
+kvoptions
+etoolbox
+intcalc
+url
+bitset
+bigintcalc
+atbegshi-ltx
+stringenc
+atveryend-ltx
+rerunfilecheck
+uniquecounter
+xcolor
+tcolorbox
+pgf
+pgfrcs
+pgfcore
+graphicx
+graphics
+trig
+pgfsys
+pgfcomp-version-0-65
+pgfcomp-version-1-18
+verbatim
+environ
+trimspaces
+listings
+lstpatch
+lstmisc
+enumitem
+caption
+caption3
+glossaries
+ifthen
+xkeyval
+mfirstuc
+xfor
+datatool-base
+amsmath
+amstext
+amsgen
+amsbsy
+amsopn
+substr
+datatool-fp
+fp
+defpattern
+fp-basic
+fp-addons
+fp-snap
+fp-exp
+fp-trigo
+fp-pas
+fp-random
+fp-eqn
+fp-upn
+fp-eval
+glossary-hypernav
+glossary-list
+glossary-long
+longtable
+glossary-super
+supertabular
+glossary-tree
+xstring
+fontspec
+xparse
+expl3
+fontspec-luatex
+fontenc
+tabularx
+array
+multirow
+epstopdf-base
+ltcaption
+lstlang1
+lstlang2
+scheme-basic
diff --git a/.github/workflows/compile.yml b/.github/workflows/compile.yml
index 739f995..293a58c 100644
--- a/.github/workflows/compile.yml
+++ b/.github/workflows/compile.yml
@@ -23,9 +23,13 @@ jobs:
           mkdir -p ~/.local/share/fonts
           curl -Lo ~/.local/share/fonts/ComicSansMS.ttf https://github.com/ImageMagick/msttcorefonts/raw/main/fonts/Comic_Sans_MS.ttf
           fc-cache -fv
-          sudo apt-get update
           sudo apt-get install --yes --no-install-recommends \
-            sbcl texlive texlive-luatex texlive-extra-utils texlive-lang-english texlive-plain-generic texlive-latex-extra xindy context
+            sbcl xindy context
+      - name: Setup TeX Live
+        uses: teatimeguest/setup-texlive-action@v3
+        with:
+          package-file: |
+            .github/tl_packages
       - name: Install env
         if: steps.cache.outputs.cache-hit != 'true'
         run: |
diff --git a/.gitignore b/.gitignore
index 9f3d9ad..5978299 100644
--- a/.gitignore
+++ b/.gitignore
@@ -15,3 +15,4 @@
 *.tmp
 *.xref
 auto/
+*.dep
diff --git a/Makefile b/Makefile
index 9ec2e64..a94a879 100644
--- a/Makefile
+++ b/Makefile
@@ -23,3 +23,7 @@ html:
 
 homepage:
 	make.lisp
+
+depends:
+	cat markless.dep | grep 'package' | sed 's/.*\*{package}{\([^}]*\).*/\1/' > .github/tl_packages
+	echo scheme-basic >> .github/tl_packages
diff --git a/markless.tex b/markless.tex
index 4042703..df41a1e 100644
--- a/markless.tex
+++ b/markless.tex
@@ -1,3 +1,4 @@
+\RequirePackage{snapshot}
 \providecommand{\doctitle}{Markless Specification}
 \providecommand{\docauthor}{Yukari Hafner}
 \providecommand{\doccopyright}{Shirakumo}