diff --git a/lib/chkconfig.ltx b/lib/chkconfig.ltx
index 2e1a1dfa31..d439a0a661 100644
--- a/lib/chkconfig.ltx
+++ b/lib/chkconfig.ltx
@@ -223,6 +223,7 @@
 
 
 %%% Packages
+\TestPackage{accents}
 \TestPackage{algorithm}
 \TestPackage{array}
 \TestPackage{babel}
@@ -258,6 +259,7 @@
 \TestPackage{rotating}
 \TestPackage{rotfloat}
 \TestPackage{setspace}
+\TestPackage{slashed}
 \TestPackage{soul}
 \TestPackage{subfig}
 \TestPackage{textcomp}
diff --git a/lib/doc/LaTeXConfig.lyx b/lib/doc/LaTeXConfig.lyx
index 9c67e2a69e..d1e65aba76 100644
--- a/lib/doc/LaTeXConfig.lyx
+++ b/lib/doc/LaTeXConfig.lyx
@@ -3843,6 +3843,35 @@ makes it possible to typeset Braille, a character system for blind people.
 Other packages
 \end_layout
 
+\begin_layout Subsection
+accents
+\end_layout
+
+\begin_layout Description
+Found: 
+\begin_inset Info
+type  "package"
+arg   "accents"
+\end_inset
+
+
+\end_layout
+
+\begin_layout Description
+CTAN: 
+\family typewriter
+macros/latex/contrib/bezos/
+\end_layout
+
+\begin_layout Description
+Notes: The package 
+\family sans
+accents
+\family default
+ is needed by LyX to correctly typeset unicode symbols with under accents
+ in math.
+\end_layout
+
 \begin_layout Subsection
 algorithm
 \end_layout
@@ -4447,6 +4476,34 @@ rotfloat
  Note that it only really works with a PostScript® compatible printer.
 \end_layout
 
+\begin_layout Subsection
+slashed
+\end_layout
+
+\begin_layout Description
+Found: 
+\begin_inset Info
+type  "package"
+arg   "slashed"
+\end_inset
+
+
+\end_layout
+
+\begin_layout Description
+CTAN: 
+\family typewriter
+macros/latex/contrib/carlisle/
+\end_layout
+
+\begin_layout Description
+Notes: The package 
+\family sans
+slashed
+\family default
+ is needed by LyX to correctly typeset unicode symbols with slashes in math.
+\end_layout
+
 \begin_layout Subsection
 subfig
 \end_layout