diff --git a/crates/parser/test_data/parser/err/0024_many_type_parens.rast b/crates/parser/test_data/parser/err/0024_many_type_parens.rast
index f0dbc9b102..025c12e4c2 100644
--- a/crates/parser/test_data/parser/err/0024_many_type_parens.rast
+++ b/crates/parser/test_data/parser/err/0024_many_type_parens.rast
@@ -186,13 +186,14 @@ SOURCE_FILE
               TUPLE_EXPR
                 L_PAREN "("
                 CLOSURE_EXPR
-                  FOR_KW "for"
-                  GENERIC_PARAM_LIST
-                    L_ANGLE "<"
-                    LIFETIME_PARAM
-                      LIFETIME
-                        LIFETIME_IDENT "'a"
-                    R_ANGLE ">"
+                  CLOSURE_BINDER
+                    FOR_KW "for"
+                    GENERIC_PARAM_LIST
+                      L_ANGLE "<"
+                      LIFETIME_PARAM
+                        LIFETIME
+                          LIFETIME_IDENT "'a"
+                      R_ANGLE ">"
                 WHITESPACE " "
                 BIN_EXPR
                   BIN_EXPR
diff --git a/crates/parser/test_data/parser/inline/ok/closure_binder.rast b/crates/parser/test_data/parser/inline/ok/closure_binder.rast
new file mode 100644
index 0000000000..c04dbe1ea0
--- /dev/null
+++ b/crates/parser/test_data/parser/inline/ok/closure_binder.rast
@@ -0,0 +1,36 @@
+SOURCE_FILE
+  FN
+    FN_KW "fn"
+    WHITESPACE " "
+    NAME
+      IDENT "main"
+    PARAM_LIST
+      L_PAREN "("
+      R_PAREN ")"
+    WHITESPACE " "
+    BLOCK_EXPR
+      STMT_LIST
+        L_CURLY "{"
+        WHITESPACE " "
+        EXPR_STMT
+          CLOSURE_EXPR
+            CLOSURE_BINDER
+              FOR_KW "for"
+              GENERIC_PARAM_LIST
+                L_ANGLE "<"
+                LIFETIME_PARAM
+                  LIFETIME
+                    LIFETIME_IDENT "'a"
+                R_ANGLE ">"
+            WHITESPACE " "
+            PARAM_LIST
+              PIPE "|"
+              PIPE "|"
+            WHITESPACE " "
+            TUPLE_EXPR
+              L_PAREN "("
+              R_PAREN ")"
+          SEMICOLON ";"
+        WHITESPACE " "
+        R_CURLY "}"
+  WHITESPACE "\n"
diff --git a/crates/parser/test_data/parser/inline/ok/lambda_expr.rast b/crates/parser/test_data/parser/inline/ok/lambda_expr.rast
index c25ad8430d..ea401d224e 100644
--- a/crates/parser/test_data/parser/inline/ok/lambda_expr.rast
+++ b/crates/parser/test_data/parser/inline/ok/lambda_expr.rast
@@ -202,13 +202,14 @@ SOURCE_FILE
         WHITESPACE "\n    "
         EXPR_STMT
           CLOSURE_EXPR
-            FOR_KW "for"
-            GENERIC_PARAM_LIST
-              L_ANGLE "<"
-              LIFETIME_PARAM
-                LIFETIME
-                  LIFETIME_IDENT "'a"
-              R_ANGLE ">"
+            CLOSURE_BINDER
+              FOR_KW "for"
+              GENERIC_PARAM_LIST
+                L_ANGLE "<"
+                LIFETIME_PARAM
+                  LIFETIME
+                    LIFETIME_IDENT "'a"
+                R_ANGLE ">"
             WHITESPACE " "
             PARAM_LIST
               PIPE "|"
@@ -222,13 +223,14 @@ SOURCE_FILE
         WHITESPACE "\n    "
         EXPR_STMT
           CLOSURE_EXPR
-            FOR_KW "for"
-            GENERIC_PARAM_LIST
-              L_ANGLE "<"
-              LIFETIME_PARAM
-                LIFETIME
-                  LIFETIME_IDENT "'a"
-              R_ANGLE ">"
+            CLOSURE_BINDER
+              FOR_KW "for"
+              GENERIC_PARAM_LIST
+                L_ANGLE "<"
+                LIFETIME_PARAM
+                  LIFETIME
+                    LIFETIME_IDENT "'a"
+                R_ANGLE ">"
             WHITESPACE " "
             MOVE_KW "move"
             WHITESPACE " "