diff --git a/cbuild b/cbuild
index bad865d..c0cc240 160000
--- a/cbuild
+++ b/cbuild
@@ -1 +1 @@
-Subproject commit bad865d76c8daf9055d0e82fcd96b5d9c7628cce
+Subproject commit c0cc240d0001bc077d70fa8797d0c4c460f3ee19
diff --git a/default.config b/default.config
index dee35b4..52235aa 100644
--- a/default.config
+++ b/default.config
@@ -1,8 +1,9 @@
 #!/bin/bash
-CBUILD_VERSION=2
-CONFIG_VERSION=3
+CBUILD_VERSION=3
+CONFIG_VERSION=4
 
 PROJECT=cobek
+echo "reading $PROJECT default config..."
 CMP_C=gcc
 CMP_CPP=g++
 STD_C=c11
@@ -11,8 +12,8 @@ WARN_C="-Wall -Wno-discarded-qualifiers"
 WARN_CPP="-Wall"
 SRC_C="$(    find src -name '*.c')"
 SRC_CPP="$(  find src -name '*.cpp')"
-TESTS_C="$(  find tests -name '*.c')"
-TESTS_CPP="$(find tests -name '*.cpp')"
+#TESTS_C="$(  find tests -name '*.c')"
+#TESTS_CPP="$(find tests -name '*.cpp')"
 
 OUTDIR=bin
 OBJDIR=obj
diff --git a/kerep b/kerep
index c2825a9..f75ab3d 160000
--- a/kerep
+++ b/kerep
@@ -1 +1 @@
-Subproject commit c2825a9540c6a265ed3401c4619dce2f578c416b
+Subproject commit f75ab3d1171670a11923d42a1eac4f06a4980d76
diff --git a/tasks/pre_build.sh b/tasks/pre_build.sh
index e13c98b..9dcc12e 100644
--- a/tasks/pre_build.sh
+++ b/tasks/pre_build.sh
@@ -1,7 +1,9 @@
 #!/bin/bash
 
 cd kerep
-make $KEREP_BUILD_TASK
+if [ ! -f "bin/kerep.a" ]; then
+    exec make "$KEREP_BUILD_TASK"
+fi
 cp bin/kerep.a ../obj/
 printf "${GREEN}copied ${CYAN}kerep.a\n"
-cd ..
\ No newline at end of file
+cd ..