diff --git a/bigloo.spec b/bigloo.spec
index 039fddc..105cd9c 100644
--- a/bigloo.spec
+++ b/bigloo.spec
@@ -40,7 +40,15 @@ Version:        4.4c
 Release:        6%{?patch_ver:.%{patch_ver}}%{?prerel:.%{prerel}}%{?dist}
 Summary:        A compiler for the Scheme programming language
 
-License:        GPLv2+
+# The compiler and tools are GPL-2.0-or-later.
+# The runtime system and libraries are LGPL-2.0-or-later.
+# Exceptions:
+# - examples/Socket/socket.scm is some unknown form of BSD (FIXME)
+# - runtime/Unsafe/sha2.scm is BSD-3-Clause
+# - api/packrat/src/Llib/json.scm is MIT
+# - api/packrat/src/Llib/packrat.scm is MIT
+# - api/text/src/Llib/levenshtein.scm is LGPL-3.0-or-later
+License:        GPL-2.0-or-later
 URL:            https://www-sop.inria.fr/mimosa/fp/Bigloo
 Source0:        ftp://ftp-sop.inria.fr/indes/fp/Bigloo/%{name}-%{version}%{?patch_suffix}%{?ver_suffix}.tar.gz
 # Not yet sent upstream: fix some bugs in the Emacs interface, and also
@@ -137,6 +145,7 @@ connections between Scheme and C programs.
 
 %package libs
 Summary:        Bigloo runtime libraries
+License:        LGPL-2.0-or-later AND LGPL-3.0-or-later AND BSD-3-Clause AND MIT
 
 %description libs
 Runtime libraries for Bigloo compiled programs.
@@ -318,6 +327,9 @@ make test
 
 
 %changelog
+* Mon Aug 15 2022 Jerry James <loganjerry@gmail.com> - 4.4c-6.4
+- Convert License field to SPDX
+
 * Wed Jul 20 2022 Fedora Release Engineering <releng@fedoraproject.org> - 4.4c-6.4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_37_Mass_Rebuild