diff --git a/modules/home/emacs.nix b/modules/home/emacs.nix
index d1d9b97..5692d9e 100644
--- a/modules/home/emacs.nix
+++ b/modules/home/emacs.nix
@@ -71,6 +71,7 @@ in {
           fontspec
           dvisvgm dvipng wrapfig # For Org-mode previews/export.
           amsmath # Essential for mathematics.
+          spath3 # TikZ dependency?
           ulem hyperref
           capt-of
           pgf # Includes TikZ.
diff --git a/modules/home/users/crumb/emacs.nix b/modules/home/users/crumb/emacs.nix
index e46d380..eb79f59 100644
--- a/modules/home/users/crumb/emacs.nix
+++ b/modules/home/users/crumb/emacs.nix
@@ -46,6 +46,7 @@ in {
           ulem hyperref
           capt-of
           pgf # Includes TikZ.
+          spath3 # TikZ dependency?
           tikz-cd # Commutative diagrams w/ TikZ.
           quiver # Commutative diagrams w/ TikZ & q.uiver.app.
           metafont