diff --git a/en/appendices.rst b/en/appendices.rst
index 1897e9bc4f..903e6f29da 100644
--- a/en/appendices.rst
+++ b/en/appendices.rst
@@ -12,7 +12,7 @@ introduced in each version and the migration path between versions.
 
     appendices/5-0-upgrade-guide
     appendices/5-0-migration-guide
-    appendices/5-1-upgrade-guide
+    appendices/5-1-migration-guide
 
 Backwards Compatibility Shimming
 ================================
diff --git a/en/appendices/5-1-upgrade-guide.rst b/en/appendices/5-1-migration-guide.rst
similarity index 98%
rename from en/appendices/5-1-upgrade-guide.rst
rename to en/appendices/5-1-migration-guide.rst
index 1e13781932..12a65dd4f8 100644
--- a/en/appendices/5-1-upgrade-guide.rst
+++ b/en/appendices/5-1-migration-guide.rst
@@ -1,5 +1,5 @@
-5.1 Upgrade Guide
-#################
+5.1 Migration Guide
+###################
 
 The 5.1.0 release is a backwards compatible with 5.0. It adds new functionality
 and introduces new deprecations. Any functionality deprecated in 5.x will be
diff --git a/en/appendices/migration-guides.rst b/en/appendices/migration-guides.rst
index e7a9c98dc2..d371baf803 100644
--- a/en/appendices/migration-guides.rst
+++ b/en/appendices/migration-guides.rst
@@ -9,4 +9,5 @@ each version and the migration path between 4.x and 5.x.
 
     ./5-0-upgrade-guide
     ./5-0-migration-guide
+    ./5-1-migration-guide
     ./phpunit10