diff --git a/flake.nix b/flake.nix
index 248ae45..be8c3c7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -34,9 +34,8 @@
           packageOverrides = pkgs:
             let sources = import ./npins;
             in {
-              agenix = (import sources.agenix { inherit pkgs; }).agenix;
+              agenix = agenix.packages.x86_64-linux.default; # TODO: This should check the host architecture
               nur = (import sources.nur { inherit pkgs; });
-              vscode-extensions = (import sources.nix-vscode-extensions).extensions.x86_64-linux; # TODO: This should check the host architecture
             };
         };
 
diff --git a/home/vscode.nix b/home/vscode.nix
index bb4c548..d081191 100644
--- a/home/vscode.nix
+++ b/home/vscode.nix
@@ -2,16 +2,27 @@
 
 let
   inherit (lib) mkIf;
+  inherit (pkgs) fetchFromGitHub;
+  system = "x86_64-linux"; # TODO: This should check the host architecture
+  extensions =
+    (import (fetchFromGitHub {
+      # On a stable channel, do NOT keep this up-to-date! VS Code extensions
+      # have breaking changes more frequently than the NixOS release cadence.
+      owner = "nix-community";
+      repo = "nix-vscode-extensions";
+      rev = "27ce569a199d2da1a8483fe3d69dd41664da3a63";
+      hash = "sha256-yyB4Kh3EFbYP+1JHza/IEeHwABypcYVi6vvWTmad/rY=";
+    })).extensions.${system};
 in {
   programs.vscode = {
     enableExtensionUpdateCheck = false;
     enableUpdateCheck = false;
     package = pkgs.vscodium;
-    extensions = with pkgs.vscode-extensions; [
-      open-vsx.golang.go
-      open-vsx.jdinhlife.gruvbox
-      open-vsx.jnoortheen.nix-ide
-      open-vsx.ms-python.python
+    extensions = with extensions.open-vsx; [
+      golang.go
+      jdinhlife.gruvbox
+      jnoortheen.nix-ide
+      ms-python.python
     ];
     mutableExtensionsDir = false;
     userSettings = {
diff --git a/npins/sources.json b/npins/sources.json
index fc17a6d..7110f10 100644
--- a/npins/sources.json
+++ b/npins/sources.json
@@ -1,32 +1,5 @@
 {
   "pins": {
-    "agenix": {
-      "type": "GitRelease",
-      "repository": {
-        "type": "GitHub",
-        "owner": "ryantm",
-        "repo": "agenix"
-      },
-      "pre_releases": false,
-      "version_upper_bound": null,
-      "release_prefix": null,
-      "version": "0.15.0",
-      "revision": "564595d0ad4be7277e07fa63b5a991b3c645655d",
-      "url": "https://api.github.com/repos/ryantm/agenix/tarball/0.15.0",
-      "hash": "01dhrghwa7zw93cybvx4gnrskqk97b004nfxgsys0736823956la"
-    },
-    "nix-vscode-extensions": {
-      "type": "Git",
-      "repository": {
-        "type": "GitHub",
-        "owner": "nix-community",
-        "repo": "nix-vscode-extensions"
-      },
-      "branch": "master",
-      "revision": "27ce569a199d2da1a8483fe3d69dd41664da3a63",
-      "url": "https://github.com/nix-community/nix-vscode-extensions/archive/27ce569a199d2da1a8483fe3d69dd41664da3a63.tar.gz",
-      "hash": "1dpykmk4xmpvx9i8awd93h0g1q8ir2pwsisjzc7vc5f43lm7h86b"
-    },
     "nur": {
       "type": "Git",
       "repository": {