diff --git a/linux-tkg-config/prepare b/linux-tkg-config/prepare
index 6eee419..dd281ab 100644
--- a/linux-tkg-config/prepare
+++ b/linux-tkg-config/prepare
@@ -26,19 +26,19 @@ _rt_subver_map=(
   ["5.10"]="83"
   ["5.11"]="4"
   ["5.14"]="2"
-  ["5.15"]="5"
+  ["5.15"]="7"
 )
 
 # PREEMPT_RT's patch revision for the kernel
 # We separated this to allow for forcing the application of the patch when _preempt_rt_force=1 on version mismatch
 typeset -Ag _rt_rev_map
 _rt_rev_map=(
-  ["5.4"]="66"
+  ["5.4"]="67"
   ["5.9"]="20"
   ["5.10"]="58"
   ["5.11"]="11"
   ["5.14"]="21"
-  ["5.15"]="22"
+  ["5.15"]="23"
 )
 
 _undefine() {