diff --git a/flake.lock b/flake.lock
index 824cd52..f90739d 100644
--- a/flake.lock
+++ b/flake.lock
@@ -7,11 +7,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1768802006,
-        "narHash": "sha256-czGb4RwTBahNNK9S7ySXeTWIrn/jKH+74hN/uIS2XrM=",
+        "lastModified": 1771133455,
+        "narHash": "sha256-DvHfkW3DctWV+YnigY4+5Stn9NgI38JqR2IScXDX8z8=",
         "owner": "dwinkler1",
         "repo": "fran",
-        "rev": "a3879317519fd3685f3b7679a1de4c5ae65a7cb9",
+        "rev": "68b189ab981adae06590ee1929a70c8b86afd2b8",
         "type": "github"
       },
       "original": {
@@ -22,11 +22,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1769461804,
-        "narHash": "sha256-msG8SU5WsBUfVVa/9RPLaymvi5bI8edTavbIq3vRlhI=",
+        "lastModified": 1771008912,
+        "narHash": "sha256-gf2AmWVTs8lEq7z/3ZAsgnZDhWIckkb+ZnAo5RzSxJg=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "bfc1b8a4574108ceef22f02bafcf6611380c100d",
+        "rev": "a82ccc39b39b621151d6732718e3e250109076fa",
         "type": "github"
       },
       "original": {
@@ -55,11 +55,11 @@
     "plugins-r": {
       "flake": false,
       "locked": {
-        "lastModified": 1769736135,
-        "narHash": "sha256-T4QgcBL+LCXvrEiRE2JW4jtUKl8DKzFHk8czGUO1jgY=",
+        "lastModified": 1770663552,
+        "narHash": "sha256-vI5XW33cNJdHdVAtLSSbKb5ROdSbeOMb23lXTUbgva8=",
         "owner": "R-nvim",
         "repo": "R.nvim",
-        "rev": "2701ec64f5485e17c0e057081a9ae2058d776464",
+        "rev": "659dc18aba2d2b799c04efbce66a15ea87bd6ec6",
         "type": "github"
       },
       "original": {
@@ -70,14 +70,18 @@
     },
     "rixpkgs": {
       "locked": {
-        "lastModified": 1768825970,
-        "narHash": "sha256-m/BI9IO7tMuOSdVNSqr0knQ4V9R6rgSXyGQOp3FovSA=",
-        "type": "tarball",
-        "url": "https://github.com/rstats-on-nix/nixpkgs/archive/2026-01-19.tar.gz"
+        "lastModified": 1770939586,
+        "narHash": "sha256-rp9f5NCjB4jRlY7Hl/I4OLN3i0wXpyBAyQKZYKZPRH0=",
+        "owner": "dwinkler1",
+        "repo": "rixpkgs",
+        "rev": "e99809ceb6b4d52b970b2fedfb19c92880cef97a",
+        "type": "github"
       },
       "original": {
-        "type": "tarball",
-        "url": "https://github.com/rstats-on-nix/nixpkgs/archive/2026-01-19.tar.gz"
+        "owner": "dwinkler1",
+        "ref": "nixpkgs",
+        "repo": "rixpkgs",
+        "type": "github"
       }
     },
     "root": {
@@ -97,11 +101,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1769745458,
-        "narHash": "sha256-Fq6THKEiAKx+wWQ4wTg9HvOAyD6i8JkWfHVQDZH7Byo=",
+        "lastModified": 1771192657,
+        "narHash": "sha256-Ibv5WEXiwr6gIEOajD4QE93TYpXUhEYv1VZV8sdU3IQ=",
         "owner": "BirdeeHub",
         "repo": "nix-wrapper-modules",
-        "rev": "cc5e052dd1e93ae75dc06e3fabf46f0820c272f2",
+        "rev": "8ba8703b62c2cc7e642f58ff03bd14a2f836e07a",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index 2c7a20b..6632310 100644
--- a/flake.nix
+++ b/flake.nix
@@ -10,7 +10,7 @@
       url = "github:BirdeeHub/nix-wrapper-modules";
       inputs.nixpkgs.follows = "nixpkgs";
     };
-    rixpkgs.url = "https://github.com/rstats-on-nix/nixpkgs/archive/2026-01-19.tar.gz";
+    rixpkgs.url = "github:dwinkler1/rixpkgs/nixpkgs";
 
     fran = {
       url = "github:dwinkler1/fran";
@@ -50,7 +50,7 @@
           nix = def true;
           optional = def false;
           python = def false;
-          r = def false;
+          r = true;
         };
 
         settings = {
@@ -68,6 +68,7 @@
               janitor
               styler
               tidyverse
+              pkgs.extraRPackages.synthdid
             ];
 
             julia = ["DataFramesMeta" "QuackIO"];
diff --git a/overlays/default.nix b/overlays/default.nix
index 39910b4..dc7ad92 100644
--- a/overlays/default.nix
+++ b/overlays/default.nix
@@ -2,7 +2,7 @@
 let
   lib = nixpkgs.lib;
 
-  rOverlay = import ./r.nix inputs;
+  rOverlay = import ./r.nix {inherit inputs;};
   franOverlay = inputs.fran.overlays.default;
   pythonOverlay = import ./python.nix inputs;
   pluginsOverlay = import ./plugins.nix inputs;
diff --git a/overlays/r.nix b/overlays/r.nix
index 96f149d..2fb71c8 100644
--- a/overlays/r.nix
+++ b/overlays/r.nix
@@ -23,13 +23,19 @@
 #
 # Update the R snapshot date in flake.nix inputs section:
 #   rixpkgs.url = "github:rstats-on-nix/nixpkgs/YYYY-MM-DD"
-{rixpkgs, ...}: final: prev: let
+{
+  inputs,
+  ...
+}: final: prev: let
   # R packages from rstats-on-nix for the current system
-  rpkgs = rixpkgs.legacyPackages.${prev.stdenv.hostPlatform.system};
+  rpkgs = import inputs.rixpkgs {
+    system = prev.stdenv.hostPlatform.system;
+    overlays = [inputs.fran.overlays.default];
+  }; # rixpkgs.legacyPackages.${prev.stdenv.hostPlatform.system};
 
   # Standard R packages used by default in rWrapper and quarto
   reqPkgs = with rpkgs.rPackages; [
-#    languageserver
+    #    languageserver
   ];
 in {
   inherit rpkgs;
@@ -42,5 +48,5 @@ in {
   quarto = rpkgs.quarto.override {extraRPackages = reqPkgs;};
 
   # Update helper for rix
-  updateR = import ../scripts/updater.nix { pkgs = final; };
+  updateR = import ../scripts/updater.nix {pkgs = final;};
 }