diff --git a/highlight/emacs/chpl-mode.el b/highlight/emacs/chpl-mode.el
index 973e10ec7b52..f53c5589acdd 100644
--- a/highlight/emacs/chpl-mode.el
+++ b/highlight/emacs/chpl-mode.el
@@ -87,7 +87,7 @@ not the type face."
   chpl '("as"
          "const" "config"
          "except" "export" "extern"
-         "import" "inline" "iter"
+         "implements" "import" "include" "inline" "iter"
          "lambda"
          "module"
          "only" "operator" "override"
@@ -110,11 +110,11 @@ will be handled.
 Note that presence on this list does not automatically treat the
 following identifier as a type; the keyword must also be present on
 `c-type-prefix-kwds' or `c-type-list-kwds' to accomplish that."
-  chpl '("class" "record" "union"))
+  chpl '("class" "record" "union" "interface"))
 
 (c-lang-defconst c-type-start-kwds
   "Keywords that can start a type."
-  chpl '("class" "enum" "record" "type" "union"))
+  chpl '("class" "enum" "record" "type" "union" "interface"))
 
 ;; Type aliases
 (c-lang-defconst c-typedef-decl-kwds
diff --git a/highlight/vim/syntax/chpl.vim b/highlight/vim/syntax/chpl.vim
index c8e42dec62a1..33ee3ee0bd81 100644
--- a/highlight/vim/syntax/chpl.vim
+++ b/highlight/vim/syntax/chpl.vim
@@ -258,7 +258,7 @@ endif
 
 " Chapel extensions
 syn keyword chplStatement	break return continue compilerWarning
-syn keyword chplStatement	new delete this these super use except only require import
+syn keyword chplStatement	new delete this these super use except only require import include
 syn keyword chplStatement	noinit init postinit deinit
 syn keyword chplStatement	manage implements
 syn keyword chplStatement	as module yield compilerError zip