diff --git a/docs/generators/elm.md b/docs/generators/elm.md
index 891a281d1eb..bab23d8acf6 100644
--- a/docs/generators/elm.md
+++ b/docs/generators/elm.md
@@ -6,4 +6,7 @@ CONFIG OPTIONS for elm
 	        0.19 - Elm 0.19
 	        0.18 - Elm 0.18
 
+	elmPrefixCustomTypeVariants
+	    Prefix custom type variants (Default: false)
+
 Back to the [generators list](README.md)
diff --git a/docs/generators/rust.md b/docs/generators/rust.md
index c8779939a30..c126505e981 100644
--- a/docs/generators/rust.md
+++ b/docs/generators/rust.md
@@ -10,4 +10,9 @@ CONFIG OPTIONS for rust
 	hideGenerationTimestamp
 	    Hides the generation timestamp when files are generated. (Default: true)
 
+	library
+	    library template (sub-template) to use. (Default: hyper)
+	        hyper - HTTP client: Hyper.
+	        reqwest - HTTP client: Reqwest.
+
 Back to the [generators list](README.md)