diff --git a/configure.ac b/configure.ac
index 406a372..400abaa 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 m4_define([poppler_version_major],[0])
 m4_define([poppler_version_minor],[28])
-m4_define([poppler_version_micro],[0])
+m4_define([poppler_version_micro],[1])
 m4_define([poppler_version],[poppler_version_major.poppler_version_minor.poppler_version_micro])
 
 AC_PREREQ(2.59)
diff --git a/cpp/Doxyfile b/cpp/Doxyfile
index f02cd0b..fef0b08 100644
--- a/cpp/Doxyfile
+++ b/cpp/Doxyfile
@@ -31,7 +31,7 @@
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 0.28.0
+PROJECT_NUMBER         = 0.28.1
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
 # base path where the generated documentation will be put.
diff --git a/qt4/src/Doxyfile b/qt4/src/Doxyfile
index 3dfa1aa..3e41397 100644
--- a/qt4/src/Doxyfile
+++ b/qt4/src/Doxyfile
@@ -31,7 +31,7 @@
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 0.28.0
+PROJECT_NUMBER         = 0.28.1
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
 # base path where the generated documentation will be put.
diff --git a/qt5/src/Doxyfile b/qt5/src/Doxyfile
index ac3b4c4..13c4ba8 100644
--- a/qt5/src/Doxyfile
+++ b/qt5/src/Doxyfile
@@ -31,7 +31,7 @@
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 0.28.0
+PROJECT_NUMBER         = 0.28.1
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
 # base path where the generated documentation will be put.