diff --git a/avoid_crashing_when_urlgrabber_debug_enabled.patch b/avoid_crashing_when_urlgrabber_debug_enabled.patch
new file mode 100644
index 0000000..11416fa
--- /dev/null
+++ b/avoid_crashing_when_urlgrabber_debug_enabled.patch
@@ -0,0 +1,24 @@
+From 4c2c0c12e77803a85cbc7d69eaff04b29aab2934 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Pablo=20Su=C3=A1rez=20Hern=C3=A1ndez?=
+ <psuarezhernandez@suse.com>
+Date: Thu, 17 Mar 2022 11:50:39 +0000
+Subject: [PATCH] Convert dict_keys to list to not crash when delegate is
+ enabled
+
+---
+ urlgrabber/grabber.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+Index: urlgrabber-4.1.0/urlgrabber/grabber.py
+===================================================================
+--- urlgrabber-4.1.0.orig/urlgrabber/grabber.py
++++ urlgrabber-4.1.0/urlgrabber/grabber.py
+@@ -1091,7 +1091,7 @@ class URLGrabberOptions:
+         return self.format()
+ 
+     def format(self, indent='  '):
+-        keys = self.__dict__.keys()
++        keys = list(self.__dict__.keys())
+         if self.delegate is not None:
+             keys.remove('delegate')
+         keys.sort()
diff --git a/python-urlgrabber.changes b/python-urlgrabber.changes
index f0eeacb..d95a14b 100644
--- a/python-urlgrabber.changes
+++ b/python-urlgrabber.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Wed Aug  3 14:30:01 UTC 2022 - Pablo Suárez Hernández <pablo.suarezhernandez@suse.com>
+
+- Avoid crashing when setting URLGRABBER_DEBUG=1 environment variable
+
+- Added:
+  * avoid_crashing_when_urlgrabber_debug_enabled.patch
+
 -------------------------------------------------------------------
 Thu Jun 16 15:20:56 UTC 2022 - Pablo Suárez Hernández <pablo.suarezhernandez@suse.com>
 
diff --git a/python-urlgrabber.spec b/python-urlgrabber.spec
index fdd97a8..9a65884 100644
--- a/python-urlgrabber.spec
+++ b/python-urlgrabber.spec
@@ -30,6 +30,8 @@ Source:         https://github.com/rpm-software-management/%{modname}/releases/d
 Patch0:         use-binary-mode-when-reopening-files.patch
 # PATCH-FIX_UPSTREAM https://github.com/rpm-software-management/urlgrabber/pull/35
 Patch1:         fix_find_proxy_logic_and_drop_six.patch
+# PATCH-FIX_UPSTREAM https://github.com/rpm-software-management/urlgrabber/pull/34
+Patch2:         avoid_crashing_when_urlgrabber_debug_enabled.patch
 
 BuildRequires:  %{python_module pycurl}
 BuildRequires:  %{python_module setuptools}