diff --git a/package.nix b/package.nix
index c210dd9e1..d377a9482 100644
--- a/package.nix
+++ b/package.nix
@@ -24,6 +24,7 @@
   libcpuid,
   libseccomp,
   libsodium,
+  lsof,
   lowdown,
   mdbook,
   mdbook-linkcheck,
@@ -138,6 +139,7 @@ in stdenv.mkDerivation (finalAttrs: {
     cmake
     meson
     ninja
+    lsof
   ] ++ lib.optional stdenv.hostPlatform.isLinux util-linuxMinimal
     ++ lib.optional (!officialRelease && buildUnreleasedNotes) changelog-d;
 
diff --git a/src/libstore/meson.build b/src/libstore/meson.build
index 0eec541a4..bbfa978d0 100644
--- a/src/libstore/meson.build
+++ b/src/libstore/meson.build
@@ -122,6 +122,7 @@ libstore = library(
   dependencies : [
     libarchive,
     liblixutil, # Internal.
+    seccomp,
     sqlite,
     sodium,
     curl,