diff --git a/pkgs/by-name/bi/bitwarden-cli/package.nix b/pkgs/by-name/bi/bitwarden-cli/package.nix
index b7bd61bb99d8..6c0a1143c6f2 100644
--- a/pkgs/by-name/bi/bitwarden-cli/package.nix
+++ b/pkgs/by-name/bi/bitwarden-cli/package.nix
@@ -50,6 +50,20 @@ buildNpmPackage rec {
 
   npmFlags = [ "--legacy-peer-deps" ];
 
+  postConfigure = ''
+    # we want to build everything from source
+    shopt -s globstar
+    rm -r node_modules/**/prebuilds
+    shopt -u globstar
+  '';
+
+  postBuild = ''
+    # remove build artifacts that bloat the closure
+    shopt -s globstar
+    rm -r node_modules/**/{*.target.mk,binding.Makefile,config.gypi,Makefile,Release/.deps}
+    shopt -u globstar
+  '';
+
   passthru = {
     tests = {
       vaultwarden = nixosTests.vaultwarden.sqlite;