diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8aeb00e..92e0726 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -7,7 +7,7 @@ SET (PROJECT_DESCRIPTION "LaTeX representation in the memory.")
 
 SET (MAJOR 0)
 SET (MINOR 1)
-SET (PATCH 5)
+SET (PATCH 6)
 
 LIST (APPEND CMAKE_MODULE_PATH ${CMAKE_SOURCE_DIR}/cmake/backbone)
 
diff --git a/cmake/backbone b/cmake/backbone
index 029b15d..82708ba 160000
--- a/cmake/backbone
+++ b/cmake/backbone
@@ -1 +1 @@
-Subproject commit 029b15da2542fbc8fe0a17d8d09ff63d3893de82
+Subproject commit 82708ba51466d02bb113e1e1aa258aef8f8bc38a
diff --git a/pkg-config/CMakeLists.txt b/pkg-config/CMakeLists.txt
index 54f5566..a1c4dfb 100644
--- a/pkg-config/CMakeLists.txt
+++ b/pkg-config/CMakeLists.txt
@@ -1,22 +1 @@
-# configure pkg-config file
-IF (WIN32)
-  SET (PkgConfigPrefix "")
-ELSE ()
-  SET (PkgConfigPrefix ${CMAKE_INSTALL_PREFIX})
-ENDIF ()
-SET (PkgConfigExecPrefix "\${prefix}")
-SET (PkgConfigLibDir "\${exec_prefix}/lib")
-SET (PkgConfigIncludeDir "\${prefix}/include")
-
-SET (PkgConfigName "${CMAKE_PROJECT_NAME}")
-SET (PkgConfigDescription "${PROJECT_DESCRIPTION}")
-SET (PkgConfigVersion "${MAJOR}.${MINOR}.${PATCH}")
-SET (PkgConfigLibs "-L\${libdir}")
-SET (PkgConfigLibs "${PkgConfigLibs} -l${PROJECT_LOWERCASE_NAME}.so.${MAJOR}")
-SET (PkgConfigLibsPrivate "")
-SET (PkgConfigCflags "")
-
-CONFIGURE_FILE (
-  "${CMAKE_CURRENT_SOURCE_DIR}/pkg-config.pc.in"
-  "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_LOWERCASE_NAME}-${MAJOR}.pc"
-)
+INCLUDE (PkgConfigCommon)