diff --git a/Cargo.toml b/Cargo.toml
index cba2e87..f97809a 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "sitewriter"
-version = "0.5.4"
+version = "0.5.5"
 authors = ["Edgar <git@edgarluque.com>"]
 edition = "2021"
 description = "A sitemap writing library."
@@ -12,9 +12,9 @@ keywords = ["sitemap", "sitemapindex", "xml", "parser"]
 categories = ["parsing"]
 
 [dependencies]
-chrono = "0.4.22"
-derive_builder = "0.11.2"
-quick-xml = "0.26.0"
+chrono = "0.4.23"
+derive_builder = "0.12.0"
+quick-xml = "0.27.1"
 url = "2.3.1"
 
 [dev-dependencies]
diff --git a/examples/gen_sitemap.rs b/examples/gen_sitemap.rs
index 2729546..7c8747c 100644
--- a/examples/gen_sitemap.rs
+++ b/examples/gen_sitemap.rs
@@ -23,7 +23,7 @@ fn main() {
             loc: "https://edgarluque.com/blog/sitewriter".parse().unwrap(),
             changefreq: Some(ChangeFreq::Never),
             priority: Some(0.5),
-            lastmod: Some(Utc.ymd(2020, 11, 22).and_hms(15, 10, 15)),
+            lastmod: Some(Utc.with_ymd_and_hms(2020, 12, 5, 15, 30, 0).unwrap()),
         },
         UrlEntry {
             loc: "https://edgarluque.com/blog/some-future-post"
@@ -31,9 +31,7 @@ fn main() {
                 .unwrap(),
             changefreq: Some(ChangeFreq::Never),
             priority: Some(0.5),
-            lastmod: Some(
-                Utc.from_utc_datetime(&Local.ymd(2020, 12, 5).and_hms(12, 30, 0).naive_utc()),
-            ),
+            lastmod: Some(Utc.with_ymd_and_hms(2020, 12, 5, 12, 30, 0).unwrap()),
         },
         // Entity escaping
         UrlEntry {
@@ -42,9 +40,7 @@ fn main() {
                 .unwrap(),
             changefreq: Some(ChangeFreq::Never),
             priority: Some(0.5),
-            lastmod: Some(
-                Utc.from_utc_datetime(&Local.ymd(2020, 12, 5).and_hms(12, 30, 0).naive_utc()),
-            ),
+            lastmod: Some(Utc.with_ymd_and_hms(2020, 12, 5, 12, 30, 0).unwrap()),
         },
     ];