diff --git a/dotfiles/vcs/gitconfig b/dotfiles/vcs/gitconfig
index ecf2a6b..8dfb3a9 100644
--- a/dotfiles/vcs/gitconfig
+++ b/dotfiles/vcs/gitconfig
@@ -21,5 +21,8 @@
 [core]
   excludesFile = ~/.gitignore
 
+[includeIf "hasconfig:remote.*.url:git@tangled.org:**"]
+  path = ~/.gitconfig-tangled
+
 [alias]
   prune-local = "!git fetch -p && git branch -vv | awk '/: gone]/ {print $1}' | grep -v '^\\*' | xargs -r git branch -D"
diff --git a/dotfiles/vcs/gitconfig-tangled b/dotfiles/vcs/gitconfig-tangled
new file mode 100644
index 0000000..64fa8cd
--- /dev/null
+++ b/dotfiles/vcs/gitconfig-tangled
@@ -0,0 +1,3 @@
+[user]
+  email = "did:plc:pbjvqaziagcyv2vqodldn5op"
+  signingkey = ~/.ssh/tangled.pub
diff --git a/modules/home-manager.nix b/modules/home-manager.nix
index c68f537..7ce70c0 100644
--- a/modules/home-manager.nix
+++ b/modules/home-manager.nix
@@ -12,6 +12,7 @@
 
   home.file = {
     ".gitconfig".source = ../dotfiles/vcs/gitconfig;
+    ".gitconfig-tangled".source = ../dotfiles/vcs/gitconfig-tangled;
     ".gitignore".source = ../dotfiles/vcs/gitignore;
     ".config/jj/config.toml".source = ../dotfiles/vcs/jjconfig;