diff --git a/0001-Catch-BadSignatureError-raised-by-ecdsa-0.13.3.patch b/0001-Catch-BadSignatureError-raised-by-ecdsa-0.13.3.patch
new file mode 100644
index 0000000..f52aec9
--- /dev/null
+++ b/0001-Catch-BadSignatureError-raised-by-ecdsa-0.13.3.patch
@@ -0,0 +1,27 @@
+From e4563939727281cd982c3a228ea80e4b8bf69997 Mon Sep 17 00:00:00 2001
+From: StefanBruens <stefan.bruens@rwth-aachen.de>
+Date: Fri, 18 Oct 2019 22:10:16 +0200
+Subject: [PATCH] Catch BadSignatureError raised by ecdsa 0.13.3 on
+ verification errors
+
+The new ecdsa no longer uses AssertionError when the signature is too long.
+This happens in the test suite, where "123" is appended to the signature.
+
+Fixes #447
+---
+ jwt/contrib/algorithms/py_ecdsa.py | 4 +++-
+ 1 file changed, 3 insertions(+), 1 deletion(-)
+
+diff --git a/jwt/contrib/algorithms/py_ecdsa.py b/jwt/contrib/algorithms/py_ecdsa.py
+index bf0dea5..adb33f4 100644
+--- a/jwt/contrib/algorithms/py_ecdsa.py
++++ b/jwt/contrib/algorithms/py_ecdsa.py
+@@ -56,5 +56,7 @@ def verify(self, msg, key, sig):
+         try:
+             return key.verify(sig, msg, hashfunc=self.hash_alg,
+                               sigdecode=ecdsa.util.sigdecode_string)
+-        except AssertionError:
++        # ecdsa <= 0.13.2 raises AssertionError on too long signatures,
++        # ecdsa >= 0.13.3 raises BadSignatureError for verification errors.
++        except (AssertionError, ecdsa.BadSignatureError):
+             return False
diff --git a/python-PyJWT.changes b/python-PyJWT.changes
index 68eca3e..31e486b 100644
--- a/python-PyJWT.changes
+++ b/python-PyJWT.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Fri Oct 18 20:24:47 UTC 2019 - Stefan Brüns <stefan.bruens@rwth-aachen.de>
+
+- Fix build with ecdsa >= 0.13.3, #447
+  * 0001-Catch-BadSignatureError-raised-by-ecdsa-0.13.3.patch
+
 -------------------------------------------------------------------
 Thu Mar  7 11:13:38 UTC 2019 - Tomáš Chvátal <tchvatal@suse.com>
 
diff --git a/python-PyJWT.spec b/python-PyJWT.spec
index c3876b8..d11d955 100644
--- a/python-PyJWT.spec
+++ b/python-PyJWT.spec
@@ -25,6 +25,8 @@ License:        MIT
 Group:          Development/Languages/Python
 URL:            https://github.com/progrium/pyjwt
 Source:         https://files.pythonhosted.org/packages/source/P/PyJWT/PyJWT-%{version}.tar.gz
+# PATCH-FIX-UPSTREAM https://github.com/jpadilla/pyjwt/pull/448.patch
+Patch0:         0001-Catch-BadSignatureError-raised-by-ecdsa-0.13.3.patch
 BuildRequires:  %{python_module cryptography >= 1.4}
 BuildRequires:  %{python_module ecdsa}
 BuildRequires:  %{python_module pytest}
@@ -44,6 +46,7 @@ A Python implementation of JSON Web Token draft 01.
 
 %prep
 %setup -q -n PyJWT-%{version}
+%patch0 -p1
 
 %build
 %python_build