diff --git a/nix/docker/default.nix b/nix/docker/default.nix
index 1f63f37f7..f01a9f3b0 100644
--- a/nix/docker/default.nix
+++ b/nix/docker/default.nix
@@ -36,7 +36,7 @@ let
       (texlive.combine {
           inherit (texlive) scheme-basic
             babel-german babel-english booktabs textpos
-            enumitem eurosym koma-script parskip xcolor roboto
+            enumitem eurosym koma-script parskip xcolor roboto xkeyval
             # required fro LuaTeX
             luatexbase lualatex-math unicode-math selnolig
             ;
diff --git a/shell.nix b/shell.nix
index d11179020..fada1fae8 100644
--- a/shell.nix
+++ b/shell.nix
@@ -286,7 +286,7 @@ in pkgs.mkShell {
       (texlive.combine {
         inherit (texlive) scheme-basic
         babel-german babel-english booktabs textpos
-        enumitem eurosym koma-script parskip xcolor roboto
+        enumitem eurosym koma-script parskip xcolor roboto xkeyval
         luatexbase lualatex-math unicode-math selnolig # required for LuaTeX
         ;
       })