diff --git a/core/siren-core-modules.el b/core/siren-core-modules.el
index 2ca92bb..df49970 100644
--- a/core/siren-core-modules.el
+++ b/core/siren-core-modules.el
@@ -158,6 +158,7 @@
 (require 'siren-jinja2)
 (require 'siren-js)
 (require 'siren-json)
+(require 'siren-jsonnet)
 (require 'siren-jsx)
 (require 'siren-lisp)
 (require 'siren-lua)
diff --git a/modules/languages/siren-jsonnet.el b/modules/languages/siren-jsonnet.el
new file mode 100644
index 0000000..3e89f6b
--- /dev/null
+++ b/modules/languages/siren-jsonnet.el
@@ -0,0 +1,18 @@
+;;; siren-jsonnet.el --- jimeh's Emacs Siren: jsonnet-mode configuration.
+
+;;; Commentary:
+
+;; Basic configuration for jsonnet-mode.
+
+;;; Code:
+
+(use-package jsonnet-mode
+  :hook
+  (jsonnet-mode . siren-jsonnet-mode-setup)
+
+  :init
+  (defun siren-jsonnet-mode-setup ()
+    "Default tweaks for `jsonnet-mode'."))
+
+(provide 'siren-jsonnet)
+;;; siren-js.el ends here
diff --git a/straight/versions/default.el b/straight/versions/default.el
index 7f5562b..8247be2 100644
--- a/straight/versions/default.el
+++ b/straight/versions/default.el
@@ -99,6 +99,7 @@
  ("json-mode" . "0e819e519ae17a2686e0881c4ca51fa873fa9b83")
  ("json-reformat" . "8eb6668ed447988aea06467ba8f42e1f2178246f")
  ("json-snatcher" . "d07b2d7a15345cd246c582ea4373709828cf8813")
+ ("jsonnet-mode" . "c8422a617438c79ade98f8d9eeb2086dacb0378c")
  ("kubernetes-el" . "f4c763016620a4ddb41698bb8aa02b18e07ac509")
  ("let-alist" . "b299c78897cc307f9d5521927376fbd06a26f123")
  ("logito" . "824acb89d2cc18cb47281a4fbddd81ad244a2052")