diff --git a/poppler-21.01.0-copy-filename.patch b/poppler-21.01.0-copy-filename.patch
new file mode 100644
index 0000000..e835561
--- /dev/null
+++ b/poppler-21.01.0-copy-filename.patch
@@ -0,0 +1,11 @@
+--- poppler-21.01.0/poppler/Form.cc
++++ poppler-21.01.0/poppler/Form.cc
+@@ -603,7 +603,7 @@ bool FormWidgetSignature::signDocument(c
+ // Get start and end file position of objNum in the PDF named filename.
+ bool FormWidgetSignature::getObjectStartEnd(GooString *filename, int objNum, Goffset *objStart, Goffset *objEnd)
+ {
+-    PDFDoc newDoc(filename);
++    PDFDoc newDoc(filename->copy());
+     if (!newDoc.isOk())
+         return false;
+ 
diff --git a/poppler.spec b/poppler.spec
index 27155c5..73d8e88 100644
--- a/poppler.spec
+++ b/poppler.spec
@@ -3,7 +3,7 @@
 Summary: PDF rendering library
 Name:    poppler
 Version: 21.01.0
-Release: 19%{?dist}
+Release: 20%{?dist}
 License: (GPLv2 or GPLv3) and GPLv2+ and LGPLv2+ and MIT
 URL:     http://poppler.freedesktop.org/
 Source0: http://poppler.freedesktop.org/poppler-%{version}.tar.xz
@@ -47,6 +47,9 @@ Patch11: poppler-21.01.0-check-isDict.patch
 # https://bugzilla.redhat.com/show_bug.cgi?id=2189810
 Patch12: poppler-21.01.0-XRef-check-isDict.patch
 
+# https://issues.redhat.com/browse/RHEL-31934
+Patch13: poppler-21.01.0-copy-filename.patch
+
 BuildRequires: make
 BuildRequires: cmake
 BuildRequires: gcc-c++
@@ -240,6 +243,10 @@ test "$(pkg-config --modversion poppler-qt5)" = "%{version}"
 %{_mandir}/man1/*
 
 %changelog
+* Wed Apr 24 2024 Marek Kasik <mkasik@redhat.com> - 21.01.0-20
+- Fix a crash during signing
+- Resolves: RHEL-31934
+
 * Thu Oct 12 2023 Marek Kasik <mkasik@redhat.com> - 21.01.0-19
 - Rebuild for inclusion of poppler-glib-doc in CRB
 - Resolves: RHEL-4274