diff --git a/messages.json b/messages.json
index b822a17..1559e63 100644
--- a/messages.json
+++ b/messages.json
@@ -55,5 +55,6 @@
     "2.48.0": "messages/2.48.0.md",
     "2.50.0": "messages/2.50.0.md",
     "2.51.0": "messages/2.51.0.md",
-    "2.51.1": "messages/2.51.1.md"
+    "2.51.1": "messages/2.51.1.md",
+    "2.52.1": "messages/2.52.1.md"
 }
\ No newline at end of file
diff --git a/messages/2.51.1.md b/messages/2.51.1.md
index a869e7f..85fac84 100644
--- a/messages/2.51.1.md
+++ b/messages/2.51.1.md
@@ -1,2 +1 @@
 # [2.51.1] - 2021.05.06
-
diff --git a/messages/2.52.1.md b/messages/2.52.1.md
new file mode 100644
index 0000000..de8b149
--- /dev/null
+++ b/messages/2.52.1.md
@@ -0,0 +1,9 @@
+# [2.52.1] - 2021.05.06
+
+* IOS-XR
+
+    * 1G / 10G Ethernet interface autocomplete
+
+    * 100G Ethernet interface [#38](https://github.com/heyglen/network_tech/issues/38)
+
+    * 40G Ethernet interface [#38](https://github.com/heyglen/network_tech/issues/38)