diff --git a/test/fixtures/ruby/for.diff+A.txt b/test/fixtures/ruby/for.diff+A.txt
index 4aad30e48..e68dcfcef 100644
--- a/test/fixtures/ruby/for.diff+A.txt
+++ b/test/fixtures/ruby/for.diff+A.txt
@@ -1,10 +1,12 @@
 {+(Program
   (For
     (Identifier)
-    (Identifier)
+    (Other "in"
+      (Identifier))
     (Identifier))
   (For
     (Identifier)
     (Identifier)
-    (Identifier)
+    (Other "in"
+      (Identifier))
     (Identifier)))+}
diff --git a/test/fixtures/ruby/for.diff+B.txt b/test/fixtures/ruby/for.diff+B.txt
index b2447923f..6092192e6 100644
--- a/test/fixtures/ruby/for.diff+B.txt
+++ b/test/fixtures/ruby/for.diff+B.txt
@@ -1,10 +1,11 @@
 {+(Program
   (For
     (Identifier)
-    (ArrayLiteral
-      (IntegerLiteral)
-      (IntegerLiteral)
-      (IntegerLiteral))
+    (Other "in"
+      (ArrayLiteral
+        (IntegerLiteral)
+        (IntegerLiteral)
+        (IntegerLiteral)))
     (MethodCall
       (Identifier)
       (Identifier))))+}
diff --git a/test/fixtures/ruby/for.diff-A.txt b/test/fixtures/ruby/for.diff-A.txt
index 52234513f..e59be77ee 100644
--- a/test/fixtures/ruby/for.diff-A.txt
+++ b/test/fixtures/ruby/for.diff-A.txt
@@ -1,10 +1,12 @@
 {-(Program
   (For
     (Identifier)
-    (Identifier)
+    (Other "in"
+      (Identifier))
     (Identifier))
   (For
     (Identifier)
     (Identifier)
-    (Identifier)
+    (Other "in"
+      (Identifier))
     (Identifier)))-}
diff --git a/test/fixtures/ruby/for.diff-B.txt b/test/fixtures/ruby/for.diff-B.txt
index 3a76a5b92..79d24c5b6 100644
--- a/test/fixtures/ruby/for.diff-B.txt
+++ b/test/fixtures/ruby/for.diff-B.txt
@@ -1,10 +1,11 @@
 {-(Program
   (For
     (Identifier)
-    (ArrayLiteral
-      (IntegerLiteral)
-      (IntegerLiteral)
-      (IntegerLiteral))
+    (Other "in"
+      (ArrayLiteral
+        (IntegerLiteral)
+        (IntegerLiteral)
+        (IntegerLiteral)))
     (MethodCall
       (Identifier)
       (Identifier))))-}
diff --git a/test/fixtures/ruby/for.diffA-B.txt b/test/fixtures/ruby/for.diffA-B.txt
index a8739ee49..5f3ec59f3 100644
--- a/test/fixtures/ruby/for.diffA-B.txt
+++ b/test/fixtures/ruby/for.diffA-B.txt
@@ -2,11 +2,12 @@
   (For
   { (Identifier)
   ->(Identifier) }
-  { (Identifier)
-  ->(ArrayLiteral
-      (IntegerLiteral)
-      (IntegerLiteral)
-      (IntegerLiteral)) }
+    (Other "in"
+    {+(ArrayLiteral
+        (IntegerLiteral)
+        (IntegerLiteral)
+        (IntegerLiteral))+}
+    {-(Identifier)-})
   { (Identifier)
   ->(MethodCall
       (Identifier)
@@ -14,5 +15,6 @@
 {-(For
     (Identifier)
     (Identifier)
-    (Identifier)
+    (Other "in"
+      (Identifier))
     (Identifier))-})
diff --git a/test/fixtures/ruby/for.diffB-A.txt b/test/fixtures/ruby/for.diffB-A.txt
index c4e0b00cf..e13e35321 100644
--- a/test/fixtures/ruby/for.diffB-A.txt
+++ b/test/fixtures/ruby/for.diffB-A.txt
@@ -2,11 +2,12 @@
   (For
   { (Identifier)
   ->(Identifier) }
-  { (ArrayLiteral
-      (IntegerLiteral)
-      (IntegerLiteral)
-      (IntegerLiteral))
-  ->(Identifier) }
+    (Other "in"
+    {+(Identifier)+}
+    {-(ArrayLiteral
+        (IntegerLiteral)
+        (IntegerLiteral)
+        (IntegerLiteral))-})
   { (MethodCall
       (Identifier)
       (Identifier))
@@ -14,5 +15,6 @@
 {+(For
     (Identifier)
     (Identifier)
-    (Identifier)
+    (Other "in"
+      (Identifier))
     (Identifier))+})
diff --git a/test/fixtures/ruby/for.parseA.txt b/test/fixtures/ruby/for.parseA.txt
index 1fd18400c..190298e8c 100644
--- a/test/fixtures/ruby/for.parseA.txt
+++ b/test/fixtures/ruby/for.parseA.txt
@@ -1,10 +1,12 @@
 (Program
   (For
     (Identifier)
-    (Identifier)
+    (Other "in"
+      (Identifier))
     (Identifier))
   (For
     (Identifier)
     (Identifier)
-    (Identifier)
+    (Other "in"
+      (Identifier))
     (Identifier)))
diff --git a/test/fixtures/ruby/for.parseB.txt b/test/fixtures/ruby/for.parseB.txt
index 166809b4c..0fcc816fd 100644
--- a/test/fixtures/ruby/for.parseB.txt
+++ b/test/fixtures/ruby/for.parseB.txt
@@ -1,10 +1,11 @@
 (Program
   (For
     (Identifier)
-    (ArrayLiteral
-      (IntegerLiteral)
-      (IntegerLiteral)
-      (IntegerLiteral))
+    (Other "in"
+      (ArrayLiteral
+        (IntegerLiteral)
+        (IntegerLiteral)
+        (IntegerLiteral)))
     (MethodCall
       (Identifier)
       (Identifier))))