diff --git a/graphviz-plugins.spec b/graphviz-plugins.spec
index c96001b..7e9e302 100644
--- a/graphviz-plugins.spec
+++ b/graphviz-plugins.spec
@@ -65,7 +65,7 @@ BuildRequires:  fdupes
 %endif
 Version:        2.28.0
 Release:        1
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Graph Visualization Tools
 Url:            http://www.graphviz.org/
 Group:          Productivity/Graphics/Visualization/Graph
@@ -92,7 +92,7 @@ A collection of tools and tcl packages for the manipulation and layout
 of graphs (as in nodes and edges, not as in bar charts).
 
 %package -n graphviz-gnome
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Graphviz plugins that use gtk/GNOME
 Group:          Productivity/Graphics/Visualization/Graph
 Requires(pre):  coreutils
@@ -104,7 +104,7 @@ Provides:       graphviz_plugin = %{version}
 Graphviz plugins that use gtk/GNOME.
 
 %package -n graphviz-gd
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Graphviz plugin for renderers based on gd
 Group:          Productivity/Graphics/Visualization/Graph
 Requires(pre):  coreutils
@@ -117,7 +117,7 @@ The graphviz-gd package contains the gd extensions for the graphviz
 tools.
 
 %package -n graphviz-guile
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Graph Visualization Tools
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -129,7 +129,7 @@ A collection of tools and tcl packages for the manipulation and layout
 of graphs (as in nodes and edges, not as in bar charts).
 
 %package -n graphviz-java
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Graph Visualization Tools
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -141,7 +141,7 @@ A collection of tools and tcl packages for the manipulation and layout
 of graphs (as in nodes and edges, not as in bar charts).
 
 %package -n graphviz-lua
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Lua extension for graphviz
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -153,7 +153,7 @@ The graphviz-lua package contains the lua extension for the graphviz
 tools.
 
 %package -n graphviz-ocaml
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        OCAML extension for graphviz
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -165,7 +165,7 @@ The graphviz-ocaml package contains the Objective Caml extension for
 the graphviz tools.
 
 %package -n graphviz-perl
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Perl extension for Graphviz
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -177,7 +177,7 @@ The graphviz-perl package contains the Perl extension for the graphviz
 tools.
 
 %package -n graphviz-php
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        PHP Extension for Graphviz
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -189,7 +189,7 @@ The graphviz-php package contains the PHP extension for the graphviz
 tools.
 
 %package -n graphviz-python
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Python Extension for Graphviz
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -201,7 +201,7 @@ The graphviz-python package contains the Python extension for the
 graphviz tools.
 
 %package -n graphviz-ruby
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Ruby Extension for Graphviz
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -213,7 +213,7 @@ The graphviz-ruby package contains the ruby extension for the graphviz
 tools.
 
 %package -n graphviz-sharp
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        C# Extension for Graphviz
 Group:          Productivity/Graphics/Visualization/Graph
 Requires:       graphviz = %{version}
@@ -225,7 +225,7 @@ The graphviz-sharp package contains the C# extension for the graphviz
 tools.
 
 %package -n graphviz-tcl
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Tcl extension tools for graphviz
 Group:          Development/Libraries/Tcl
 Requires:       graphviz = %{version}
@@ -238,7 +238,7 @@ The graphviz-tcl package contains the various tcl packages (extensions)
 for the graphviz tools.
 
 %package -n graphviz-doc
-License:        IBM Public License ..
+License:        IPL-1.0
 Summary:        Documentation for graphviz
 Group:          Productivity/Graphics/Visualization/Graph