diff --git a/content/changelog/v1.1.md b/content/changelog/v1.1.md
index 48934fb3..8cf43878 100644
--- a/content/changelog/v1.1.md
+++ b/content/changelog/v1.1.md
@@ -1,5 +1,5 @@
 ---
-date: 1636416000
+date: 2021-11-09T00:00:00+0000
 ---
 <!--
 This is a header file for the generated changelog.
diff --git a/content/changelog/v1.2.md b/content/changelog/v1.2.md
index 686d36db..22deb1ac 100644
--- a/content/changelog/v1.2.md
+++ b/content/changelog/v1.2.md
@@ -1,5 +1,5 @@
 ---
-date: 1643760000
+date: 2022-02-02T00:00:00+0000
 ---
 <!--
 This is a header file for the generated changelog.
diff --git a/content/changelog/v1.3.md b/content/changelog/v1.3.md
index 96051f06..bc05b1cc 100644
--- a/content/changelog/v1.3.md
+++ b/content/changelog/v1.3.md
@@ -1,5 +1,5 @@
 ---
-date: 1655247600
+date: 2022-06-15T00:00:00+0100
 ---
 <!--
 This is a header file for the generated changelog.
diff --git a/content/changelog/v1.4.md b/content/changelog/v1.4.md
index f522d405..7d22c00e 100644
--- a/content/changelog/v1.4.md
+++ b/content/changelog/v1.4.md
@@ -1,5 +1,5 @@
 ---
-date: 1664406000
+date: 2022-09-29T00:00:00+0100
 ---
 <!--
 This is a header file for the generated changelog.
diff --git a/scripts/generate-changelog.sh b/scripts/generate-changelog.sh
index f47ac6d0..73e59940 100755
--- a/scripts/generate-changelog.sh
+++ b/scripts/generate-changelog.sh
@@ -29,7 +29,7 @@ towncrier --name "Client-Server API" --dir "./client_server" --config "./pyproje
     # to sort the changelogs at build time.
     cat <<EOF
 ---
-date: $(date +%s)
+date: $(date -Iseconds)
 ---
 EOF
     if [ "$VERSION" = "vUNSTABLE" ]; then