diff --git a/configs/thilo-pc/nixos.nix b/configs/thilo-pc/nixos.nix
index 4e7d9bd..c71d346 100644
--- a/configs/thilo-pc/nixos.nix
+++ b/configs/thilo-pc/nixos.nix
@@ -149,6 +149,7 @@
   time.hardwareClockInLocalTime = true;
 
   nix.settings.experimental-features = [ "nix-command" "flakes" ];
+  nix.settings.trusted-users = [ "root" "thilo" ];
 
   nixpkgs.config.permittedInsecurePackages = [
     "electron-24.8.6"
diff --git a/flake.lock b/flake.lock
index 8006602..f635d6e 100644
--- a/flake.lock
+++ b/flake.lock
@@ -84,11 +84,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1698670511,
-        "narHash": "sha256-jQIu3UhBMPHXzVkHQO1O2gg8SVo5lqAVoC6mOaLQcLQ=",
+        "lastModified": 1698896213,
+        "narHash": "sha256-u42NZt52F3o7pM5V7sYlLOp5tSN8z9+fO2wFcOs0EOQ=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "8e5416b478e465985eec274bc3a018024435c106",
+        "rev": "831b4fa31749208e576050c563e9773aafd04941",
         "type": "github"
       },
       "original": {
@@ -222,11 +222,11 @@
     },
     "nixpkgs_3": {
       "locked": {
-        "lastModified": 1698610559,
-        "narHash": "sha256-i8vFNXJz9VcH05oNe/3Jm5f+CtE3g5uOUvF/dobTMUQ=",
+        "lastModified": 1698956996,
+        "narHash": "sha256-X029F/YpX0HoE5ppGaVWY+arqI2DokggQtJACSl67+8=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "4e43dd49630303b00120c11d00d4fb01bb40188d",
+        "rev": "e8be045c25d93f18f3530ac2dfa264750c6778b7",
         "type": "github"
       },
       "original": {
diff --git a/home-manager/pkgs/toggl-time-grouper/toggl-time-grouper b/home-manager/pkgs/toggl-time-grouper/toggl-time-grouper
index 4f8373c..53ce0d4 100644
--- a/home-manager/pkgs/toggl-time-grouper/toggl-time-grouper
+++ b/home-manager/pkgs/toggl-time-grouper/toggl-time-grouper
@@ -9,7 +9,16 @@ df = pd.read_csv(sys.argv[1])
 df = df.drop(columns=['User', 'Email', 'Billable', 'Tags', 'Amount ()', 'Start time', 'End date', 'End time'])
 df['Duration'] = pd.to_timedelta(df['Duration'])
 df['Start date'] = pd.to_datetime(df['Start date'])
+df['duration_dec'] = df['Duration'].dt.total_seconds() / 3600
+df.rename(columns={
+    'Project': 'project',
+    'Description': 'description',
+    'Start date': 'day',
+    'Duration': 'duration'
+}, inplace=True)
 
-df = df.groupby(['Project','Description','Start date'])['Duration'].sum()
+df = df.groupby(['project','description','day'], as_index=False).agg({'duration': 'sum'})
+df['duration'] = round(df['duration'].dt.total_seconds() / 60 / 60, 2)
+print("Total hours are: ", round(df['duration'].sum(), 2))
 
-df.to_csv(Path(sys.argv[1]).stem + '-grouped.csv')
\ No newline at end of file
+df.to_csv(Path(sys.argv[1]).stem + '-grouped.csv', index=False)
\ No newline at end of file