diff --git a/libica.changes b/libica.changes
index 7e7df81..e72c78f 100644
--- a/libica.changes
+++ b/libica.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Tue Sep 11 17:19:57 UTC 2018 - mpost@suse.com
+
+- Added "Obsoletes: libica2" to the libica-tools package to fix
+  a problem with upgrading from SLES12 SP2 to either SLES12
+  SP3/SP4, or SLES15. (bsc#1046435, bsc#1104638)
+
 -------------------------------------------------------------------
 Wed Apr 18 02:29:29 UTC 2018 - mpost@suse.com
 
diff --git a/libica.spec b/libica.spec
index 23c0a14..ea97c5b 100644
--- a/libica.spec
+++ b/libica.spec
@@ -66,6 +66,7 @@ modules to interface with the IBM eServer Cryptographic Accelerator
 Summary:        Utilities for the IBM Cryptographic Accelerator
 Group:          Hardware/Other
 Obsoletes:      libica < %{version}-%{release}
+Obsoletes:      libica2
 Provides:       libica = %{version}-%{release}
 Provides:       libica-plugin = %{version}-%{release}