diff --git a/opencryptoki.spec b/opencryptoki.spec
index 8f0ae09..a94594c 100644
--- a/opencryptoki.spec
+++ b/opencryptoki.spec
@@ -35,6 +35,7 @@ This package contains the Slot Daemon (pkcsslotd) and general utilities.
 %package libs
 Group:			System Environment/Libraries
 Summary:		The run-time libraries for opencryptoki package
+Obsoletes:		%{name}-libs%{?_isa} < 2.3.2
 
 %description libs
 Opencryptoki implements the PKCS#11 specification v2.11 for a set of
@@ -61,6 +62,7 @@ opencryptoki and PKCS#11 based applications
 Group:			System Environment/Libraries
 Summary:		The software token implementation for opencryptoki
 Requires:		%{name}-libs%{?_isa} = %{version}-%{release}
+Obsoletes:		%{name}-libs%{?_isa} < 2.3.2
 
 %description swtok
 Opencryptoki implements the PKCS#11 specification v2.11 for a set of
@@ -76,6 +78,7 @@ without any specific cryptographic hardware.
 Group:			System Environment/Libraries
 Summary:		Trusted Platform Module (TPM) device support for opencryptoki
 Requires:		%{name}-libs%{?_isa} = %{version}-%{release}
+Obsoletes:		%{name}-libs%{?_isa} < 2.3.2
 
 %description tpmtok
 Opencryptoki implements the PKCS#11 specification v2.11 for a set of
@@ -92,6 +95,7 @@ Trusted Platform Module (TPM) devices in the opencryptoki stack.
 Group:			System Environment/Libraries
 Summary:		ICA cryptographic devices (clear-key) support for opencryptoki
 Requires:		%{name}-libs%{?_isa} = %{version}-%{release}
+Obsoletes:		%{name}-libs%{?_isa} < 2.3.2
 
 %description icatok
 Opencryptoki implements the PKCS#11 specification v2.11 for a set of
@@ -108,6 +112,7 @@ cryptographic hardware such as IBM 4764 or 4765 that uses the
 Group:			System Environment/Libraries
 Summary:		CCA cryptographic devices (secure-key) support for opencryptoki
 Requires:		%{name}-libs%{?_isa} = %{version}-%{release}
+Obsoletes:		%{name}-libs%{?_isa} < 2.3.2
 
 %description ccatok
 Opencryptoki implements the PKCS#11 specification v2.11 for a set of