diff --git a/chapter_18/pizzeria/Pipfile.lock b/chapter_18/pizzeria/Pipfile.lock
index 7dffd5b..7eed731 100644
--- a/chapter_18/pizzeria/Pipfile.lock
+++ b/chapter_18/pizzeria/Pipfile.lock
@@ -26,17 +26,18 @@
         },
         "pytz": {
             "hashes": [
-                "sha256:303879e36b721603cc54604edcac9d20401bdbe31e1e4fdee5b9f98d5d31dfda",
-                "sha256:d747dd3d23d77ef44c6a3526e274af6efeb0a6f1afd5a69ba4d5be4098c8e141"
+                "sha256:1d8ce29db189191fb55338ee6d0387d82ab59f3d00eac103412d64e0ebd0c588",
+                "sha256:a151b3abb88eda1d4e34a9814df37de2a80e301e68ba0fd856fb9b46bfbbbffb"
             ],
-            "version": "==2019.1"
+            "version": "==2023.3"
         },
         "sqlparse": {
             "hashes": [
-                "sha256:40afe6b8d4b1117e7dff5504d7a8ce07d9a1b15aeeade8a2d10f130a834f8177",
-                "sha256:7c3dca29c022744e95b547e867cee89f4fce4373f3549ccd8797d8eb52cdb873"
+                "sha256:5430a4fe2ac7d0f93e66f1efc6e1338a41884b7ddf2a350cedd20ccc4d9d28f3",
+                "sha256:d446183e84b8349fa3061f0fe7f06ca94ba65b426946ffebe6e3e8295332420c"
             ],
-            "version": "==0.3.0"
+            "index": "pypi",
+            "version": "==0.4.4"
         }
     },
     "develop": {}