diff --git a/admin-tools/pyenv-newest-versions b/admin-tools/pyenv-newest-versions
index b6dd3491..f2c5ebcc 100644
--- a/admin-tools/pyenv-newest-versions
+++ b/admin-tools/pyenv-newest-versions
@@ -5,4 +5,4 @@ if [[ $0 == ${BASH_SOURCE[0]} ]] ; then
     echo "This script should be *sourced* rather than run directly through bash"
     exit 1
 fi
-export PYVERSIONS='3.6.15 pypy3.6-7.3.1 3.7.13 pypy3.8-7.3.9 pyston-2.3.3 3.8.13'
+export PYVERSIONS='3.6.15 pypy3.6-7.3.1 3.7.14 pypy3.8-7.3.9 pyston-2.3.3 3.8.14'
diff --git a/test/bytecode_3.6_run/10_fstring.pyc b/test/bytecode_3.6_run/10_fstring.pyc
index b54bc491..c3ae2325 100644
Binary files a/test/bytecode_3.6_run/10_fstring.pyc and b/test/bytecode_3.6_run/10_fstring.pyc differ
diff --git a/test/simple_source/bug36/10_fstring.py b/test/simple_source/bug36/10_fstring.py
index 876f15e9..52f79481 100644
--- a/test/simple_source/bug36/10_fstring.py
+++ b/test/simple_source/bug36/10_fstring.py
@@ -59,9 +59,9 @@ log_rounds = 5
 assert "05$" == f"{log_rounds:02d}$"
 
 
-def testit(a, b, l):
-    # print(l)
-    return l
+def testit(a, b, ll):
+    # print(ll)
+    return ll
 
 
 # The call below shows the need for BUILD_STRING to count expr arguments.
@@ -102,11 +102,11 @@ assert f"x={x*y:{width}}" == "x=foofoo    "
 # equivalent thing. For compatiblity with older Python we'll use "%"
 # instead of a format string
 def f():
-    f"""Not a docstring"""
+    f"""Not a docstring"""  # noqa
 
 
 def g():
-    """Not a docstring""" f""
+    """Not a docstring""" f""  # noqa
 
 
 assert f.__doc__ is None
@@ -129,3 +129,17 @@ assert f'{f"{0}"*3}' == "000"
 # The former, {{ confuses the format strings so dictionary/set comprehensions
 # don't work.
 assert f"expr={ {x: y for x, y in [(1, 2), ]}}" == "expr={1: 2}"
+
+
+class Line:
+    def __init__(self, x, y):
+        self.x = x
+        self.y = y
+
+    # From 3.7 test_typing.py
+    def __str__(self):
+        return f"{self.x} -> {self.y}"
+
+
+line = Line(1, 2)
+assert str(line) == "1 -> 2"
diff --git a/uncompyle6/semantics/customize37.py b/uncompyle6/semantics/customize37.py
index fe4c0c4b..b2680432 100644
--- a/uncompyle6/semantics/customize37.py
+++ b/uncompyle6/semantics/customize37.py
@@ -94,8 +94,7 @@ def customize_for_version37(self, version):
             # need parenthesis.
             # Note there are async dictionary expressions are like await expr's
             # the below is just the default fersion
-            "await_expr": ("await %p", (0, PRECEDENCE["await_expr"]-1)),
-
+            "await_expr": ("await %p", (0, PRECEDENCE["await_expr"] - 1)),
             "await_stmt": ("%|%c\n", 0),
             "c_async_with_stmt": ("%|async with %c:\n%+%c%-", (0, "expr"), 3),
             "call_ex": ("%c(%p)", (0, "expr"), (1, 100)),
@@ -156,7 +155,10 @@ def customize_for_version37(self, version):
                 (2, "import_from_attr37"),
                 (3, "store"),
             ),
-            "import_one": ("%c", (0, "importlists"),),
+            "import_one": (
+                "%c",
+                (0, "importlists"),
+            ),
             "importattr37": ("%c", (0, "IMPORT_NAME_ATTR")),
             "import_from_attr37": (
                 "%c import %c",
@@ -165,12 +167,9 @@ def customize_for_version37(self, version):
             ),
             "list_afor": (
                 " async for %[1]{%c} in %c%[1]{%c}",
-                (1, "store"), (0, "get_aiter"), (3, "list_iter"),
-            ),
-
-            "list_afor": (
-                " async for %[1]{%c} in %c%[1]{%c}",
-                (1, "store"), (0, "get_aiter"), (3, "list_iter"),
+                (1, "store"),
+                (0, "get_aiter"),
+                (3, "list_iter"),
             ),
 
             "list_if37": (" if %p%c", (0, 27), 1),
@@ -408,12 +407,17 @@ def customize_for_version37(self, version):
     self.n_call = n_call
 
     def n_compare_chained(node):
-        if node[0] == "compare_chained37":
+        if node[0] in (
+            "c_compare_chained37",
+            "c_compare_chained37_false",
+            "compare_chained37",
+            "compare_chained37_false",
+        ):
             self.default(node[0])
         else:
             self.default(node)
 
-    self.n_compare_chained = n_compare_chained
+    self.n_compare_chained = self.n_c_compare_chained = n_compare_chained
 
     def n_importlist37(node):
         if len(node) == 1:
@@ -439,3 +443,26 @@ def customize_for_version37(self, version):
         self.prune()
 
     self.n_list_comp_async = n_list_comp_async
+
+    # FIXME: The following adjusts I guess a bug in the parser.
+    # It might be as simple as renaming grammar symbol "testtrue" to "testtrue_or_false"
+    # and then keeping this as is with the name change.
+    # Fixing in the parsing by inspection is harder than doing it here.
+    def n_testtrue(node):
+        compare_chained37 = node[0]
+        if (
+            compare_chained37 == "compare_chained37"
+            and compare_chained37[1] == "compare_chained1b_37"
+        ):
+            compare_chained1b_37 = compare_chained37[1]
+            if (
+                len(compare_chained1b_37) > 2
+                and compare_chained1b_37[-2] == "JUMP_FORWARD"
+            ):
+                node.kind = "testfalse"
+                pass
+            pass
+        self.default(node)
+        return
+
+    self.n_testtrue = n_testtrue