diff --git a/packages.nix b/packages.nix
index 405fcde..cf43791 100644
--- a/packages.nix
+++ b/packages.nix
@@ -81,6 +81,7 @@
     meld
     glab
     sapling
+    difftastic
 
     firefox
     vivaldi
diff --git a/programs/git.nix b/programs/git.nix
index c0f6e56..5419df9 100644
--- a/programs/git.nix
+++ b/programs/git.nix
@@ -37,6 +37,7 @@
       diff.colorMoved = "default";
 
       merge.tool = "meld";
+      diff.external = "difft";
       diff.algorithm = "patience";
       pull.ff = "only";
       credential.helper = "store";