diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 9337b2e..9ef535d 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -19,7 +19,7 @@ jobs:
       should_skip: ${{ steps.skip_check.outputs.should_skip }}
     steps:
       - id: skip_check
-        uses: fkirc/skip-duplicate-actions@v4
+        uses: fkirc/skip-duplicate-actions@v5
         with:
           cancel_others: 'true'
           paths: '["src/**", "Makefile", "fixdate.pl"]'
@@ -27,7 +27,7 @@ jobs:
   check:
     name: Check LaTeX
     needs: skip_check
-    if: ${{ needs.skip_check.outputs.should_skip != 'true' }}
+    if: ${{ needs.skip_check.outputs.should_skip != true }}
     runs-on: ubuntu-latest
     container: ghcr.io/xu-cheng/texlive-small:latest
 
@@ -40,7 +40,7 @@ jobs:
           tlmgr install latexindent
 
       - name: Checkout the repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Run ChkTeX
         run: |
@@ -56,7 +56,7 @@ jobs:
   build_latex:
     name: Build LaTeX
     needs: skip_check
-    if: ${{ needs.skip_check.outputs.should_skip != 'true' }}
+    if: ${{ needs.skip_check.outputs.should_skip != true }}
     runs-on: ubuntu-latest
     container: ghcr.io/xu-cheng/texlive-full:latest
 
@@ -70,7 +70,7 @@ jobs:
           apk add py3-pygments
 
       - name: Checkout the repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           submodules: recursive
 
diff --git a/src/basics.tex b/src/basics.tex
index 701442f..7c17831 100644
--- a/src/basics.tex
+++ b/src/basics.tex
@@ -689,33 +689,33 @@ \section{Packages}\index{package} While writing your document, you will
   \caption{Examples of \LaTeX{} packages.}\label{packages}
   \begin{tabular}{@{}lp{9cm}@{}}
     \toprule
-    Package            & Description                                          \\
+    Package            & Description                                         \\
     \midrule
     \pai*{amsmath}     & Provides additional commands for typesetting
     mathematical symbols, and environments for aligning equations. Described
-    in \autoref{chap:math}.                                                   \\
+    in \autoref{chap:math}.                                                  \\
 
     \pai*{polyglossia} & Makes it easy to write \LaTeX{} documents in
     languages other than English, or even in multiple languages.
-    Described in \autoref{sec:polyglossia}.                                   \\
+    Described in \autoref{sec:polyglossia}.                                  \\
 
     \pai*{booktabs}    & Provides commands for producing beautifully
     formatted tables for your document. Described in
-    \autoref{sec:tables}.                                                     \\
+    \autoref{sec:tables}.                                                    \\
 
     \pai*{biblatex}    & Provides commands for automatically specifying and
     producing a bibliography for your document. Described in
-    \autoref{chap:bibliography}.                                              \\
+    \autoref{chap:bibliography}.                                             \\
 
     \pai*{makeidx}     & Provides commands for producing indexes. Described
-    in \autoref{sec:indexing}.                                                \\
+    in \autoref{sec:indexing}.                                               \\
 
     \pai*{fancyhdr}    & Lets you easily customise page headers and footers.
-    Described in \autoref{sec:fancy}.                                         \\
+    Described in \autoref{sec:fancy}.                                        \\
 
     \pai*{beamer}      & Provides a document class that changes output to
     produce presentations and provides command to typeset slides.
-    Described in \autoref{sec:beamer}.                                        \\
+    Described in \autoref{sec:beamer}.                                       \\
     \bottomrule
   \end{tabular}
 \end{table}