diff --git a/julia-mode-tests.el b/julia-mode-tests.el
index 72314a6..56ebb38 100644
--- a/julia-mode-tests.el
+++ b/julia-mode-tests.el
@@ -655,6 +655,17 @@ var = func(begin
   (let ((string "for i∈1:10\nprintln(i)\nend"))
     (julia--should-font-lock string 2 font-lock-keyword-face)
     (julia--should-font-lock string 6 font-lock-keyword-face))
+  (let ((string "for i\n in (5, 10)\nprintln(i)\nend"))
+    (julia--should-font-lock string 1 font-lock-keyword-face)
+    (julia--should-font-lock string 8 font-lock-keyword-face))
+  (let ((string "for i in (5, 10), j in (10, 15)\nprintln(i)\nend"))
+    (julia--should-font-lock string 1 font-lock-keyword-face)
+    (julia--should-font-lock string 7 font-lock-keyword-face)
+    (julia--should-font-lock string 21 font-lock-keyword-face))
+  (let ((string "for i in (5, 10),\nj in (10, 15)\nprintln(i)\nend"))
+    (julia--should-font-lock string 1 font-lock-keyword-face)
+    (julia--should-font-lock string 7 font-lock-keyword-face)
+    (julia--should-font-lock string 21 font-lock-keyword-face))
   (let ((string "[i for i in 1:10]"))
     (julia--should-font-lock string 4 font-lock-keyword-face)
     (julia--should-font-lock string 10 font-lock-keyword-face))
@@ -668,6 +679,11 @@ var = func(begin
     (julia--should-font-lock string 25 nil)
     (julia--should-font-lock string 26 nil)))
 
+(ert-deftest julia--test-in-font-lock ()
+  "in font-locked as keyword for containment"
+  (let ((string "if 2 in [1, 2, 3]"))
+    (julia--should-font-lock string 6 font-lock-keyword-face)))
+
 (ert-deftest julia--test-typeparams-font-lock ()
   (let ((string "@with_kw struct Foo{A <: AbstractThingy, B <: Tuple}\n    bar::A\n    baz::B\nend"))
     (julia--should-font-lock string 30 font-lock-type-face) ; AbstractThingy
diff --git a/julia-mode.el b/julia-mode.el
index 10fd963..0a4600b 100644
--- a/julia-mode.el
+++ b/julia-mode.el
@@ -189,9 +189,8 @@
 (defconst julia-unquote-regex
   "\\(\\s(\\|\\s-\\|-\\|[,%=<>\\+*/?&|!\\^~\\\\;:]\\|^\\)\\($[a-zA-Z0-9_]+\\)")
 
-(defconst julia-forloop-in-regex
-  "for +.*[^
-].* \\(in\\)\\(\\s-\\|$\\)+")
+(defconst julia-in-regex
+  " \\(in\\)\\(\\s-\\|$\\)+")
 
 (defconst julia--forloop-=-regex
   (rx "for"
@@ -282,7 +281,7 @@
     'font-lock-constant-face)
    (cons "ccall" 'font-lock-builtin-face)
    (list julia-unquote-regex 2 'font-lock-constant-face)
-   (list julia-forloop-in-regex 1 'font-lock-keyword-face)
+   (list julia-in-regex 1 'font-lock-keyword-face)
    (list julia--forloop-=-regex 1 'font-lock-keyword-face)
    (list julia-ternary-regex (list 1 'font-lock-keyword-face) (list 2 'font-lock-keyword-face))
    (list julia-function-regex 1 'font-lock-function-name-face)