diff --git a/doc/compiled.json b/doc/compiled.json
index 54c63eec..b0e457e8 100644
--- a/doc/compiled.json
+++ b/doc/compiled.json
@@ -18183,7 +18183,7 @@
                     ]
                   },
                   "cldr_version": {
-                    "description": "(Optional) CLDR plural-rule version used by the project.",
+                    "description": "(Optional) CLDR plural-rule version used by the project. Pass `legacy` for pre-CLDR pluralization behaviour, or a CLDR version string such as `cldr48`. Also used as the default version for the ICU skeleton endpoint (`POST /icu/skeleton`) when its own `cldr_version` parameter is omitted.",
                     "type": "string",
                     "example": "cldr48"
                   },
@@ -18543,7 +18543,7 @@
                     "example": "unicode_ci"
                   },
                   "cldr_version": {
-                    "description": "(Optional) CLDR plural-rule version used by the project.",
+                    "description": "(Optional) CLDR plural-rule version used by the project. Pass `legacy` for pre-CLDR pluralization behaviour, or a CLDR version string such as `cldr48`. Also used as the default version for the ICU skeleton endpoint (`POST /icu/skeleton`) when its own `cldr_version` parameter is omitted.",
                     "type": "string",
                     "example": "legacy"
                   }
diff --git a/paths/projects/create.yaml b/paths/projects/create.yaml
index 6f174aa5..f0bcb125 100644
--- a/paths/projects/create.yaml
+++ b/paths/projects/create.yaml
@@ -214,7 +214,12 @@ requestBody:
               - "UTF-16LE"
               - "ISO-8859-1"
           cldr_version:
-            description: "(Optional) CLDR plural-rule version used by the project."
+            description: >-
+              (Optional) CLDR plural-rule version used by the project. Pass
+              `legacy` for pre-CLDR pluralization behaviour, or a CLDR
+              version string such as `cldr48`. Also used as the default
+              version for the ICU skeleton endpoint (`POST /icu/skeleton`)
+              when its own `cldr_version` parameter is omitted.
             type: string
             example: "cldr48"
           placeholder_styles:
diff --git a/paths/projects/update.yaml b/paths/projects/update.yaml
index 10a7941b..09d0c125 100644
--- a/paths/projects/update.yaml
+++ b/paths/projects/update.yaml
@@ -217,7 +217,12 @@ requestBody:
             type: string
             example: unicode_ci
           cldr_version:
-            description: "(Optional) CLDR plural-rule version used by the project."
+            description: >-
+              (Optional) CLDR plural-rule version used by the project. Pass
+              `legacy` for pre-CLDR pluralization behaviour, or a CLDR
+              version string such as `cldr48`. Also used as the default
+              version for the ICU skeleton endpoint (`POST /icu/skeleton`)
+              when its own `cldr_version` parameter is omitted.
             type: string
             example: "legacy"
 x-cli-version: "2.6.3"