diff --git a/common/Version b/common/Version
index fd2a01863..fdbbbeea0 100644
--- a/common/Version
+++ b/common/Version
@@ -1 +1 @@
-3.1.0
+4.0.0~alpha1
diff --git a/libraries/libapparmor/src/Makefile.am b/libraries/libapparmor/src/Makefile.am
index 827df86bb..f15013384 100644
--- a/libraries/libapparmor/src/Makefile.am
+++ b/libraries/libapparmor/src/Makefile.am
@@ -32,10 +32,10 @@ INCLUDES = $(all_includes)
 #
 # After changing the AA_LIB_* variables, also update EXPECTED_SO_NAME.
 
-AA_LIB_CURRENT = 13
-AA_LIB_REVISION = 2
-AA_LIB_AGE = 12
-EXPECTED_SO_NAME = libapparmor.so.1.12.2
+AA_LIB_CURRENT = 18
+AA_LIB_REVISION = 0
+AA_LIB_AGE = 17
+EXPECTED_SO_NAME = libapparmor.so.1.17.0
 
 SUFFIXES = .pc.in .pc