diff --git a/openexr.changes b/openexr.changes
index fb652f6..9b45890 100644
--- a/openexr.changes
+++ b/openexr.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Aug 16 14:41:56 UTC 2021 - pgajdos@suse.com
+
+- devel package obsoletes and provides ilmbase-devel
+
 -------------------------------------------------------------------
 Fri Aug 13 10:26:55 UTC 2021 - pgajdos@suse.com
 
diff --git a/openexr.spec b/openexr.spec
index 5818e43..8e99958 100644
--- a/openexr.spec
+++ b/openexr.spec
@@ -122,6 +122,8 @@ Obsoletes:      OpenEXR-devel <= 1.6.1
 Provides:       OpenEXR-devel = %{version}
 Obsoletes:      libopenexr-devel <= 1.7.0
 Provides:       libopenexr-devel = %{version}
+Obsoletes:      ilmbase-devel < 3.0
+Provides:       ilmbase-devel = %{version}
 
 %description devel
 OpenEXR is a high dynamic-range (HDR) image file format developed by