diff --git a/ci/Jenkinsfile.nix-cache b/ci/Jenkinsfile.nix-cache
index c3b10b9861..9811eb30d6 100644
--- a/ci/Jenkinsfile.nix-cache
+++ b/ci/Jenkinsfile.nix-cache
@@ -98,8 +98,8 @@ pipeline {
           nix.shell("""
               find /nix/store/ -mindepth 1 -maxdepth 1 -type d \
                 -not -name '*.links' -and -not -name '*-status-react-*' \
-                | xargs nix-copy-closure -v \
-                  --to ${params.NIX_CACHE_USER}@${params.NIX_CACHE_HOST}
+                | xargs nix copy \
+                  --to ssh-ng://${params.NIX_CACHE_USER}@${params.NIX_CACHE_HOST}
             """,
             pure: false
           )
diff --git a/nix/nix.conf b/nix/nix.conf
index 19488b3659..d9bbe8a985 100644
--- a/nix/nix.conf
+++ b/nix/nix.conf
@@ -11,3 +11,5 @@ keep-derivations = true
 keep-outputs = true
 # Extra isolation for network and filesystem, doesn't work on MacOS
 build-use-sandbox = false
+# Enable Nix v2 interface.
+experimental-features = nix-command