diff --git a/CMakeLists.txt b/CMakeLists.txt
index f4aee40..d2e53ae 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,6 @@ cppm_cxx_standard(17)
 cppm_compiler_option(
    DEBUG
       CLANG "-fprofile-instr-generate -fcoverage-mapping --coverage" 
-      GCC   "--coverage -fno-inline -fno-inline-small-functions -fno-default-inline"
 )
 
 find_cppkg(benchmark 1.5.2  MODULE benchmark::benchmark TYPE lib OPTIONAL OFF)
diff --git a/cppm.toml b/cppm.toml
index 167eca1..70ff3c4 100644
--- a/cppm.toml
+++ b/cppm.toml
@@ -8,7 +8,7 @@
 #    include=["cmake/Lua.cmake"]
 
 [profile.dev.compiler]
-    clang = "-fprofile-instr-generate -fcoverage-mapping"
+    clang = "-fprofile-instr-generate -fcoverage-mapping --coverage"
 
 [lib]
    name = "serdepp"
@@ -93,7 +93,7 @@ source = ["tests/.*"]
     nameof = { version="0.10.0", link="public"}
     magic_enum = { version= "0.7.3", link="public"}
     fmt = {version="8.0.1", link="public", optional=true}
-    yaml-cpp   = { version="0.7.0",  link="public", optional=true}
+    yaml-cpp   = { version="0.6.3",  link="public", optional=true}
     toml11     = { version="3.7.0",  link="public", optional=true}
     nlohmann_json = { version="3.10.5", link="public", optional=true}
     RapidJSON = { version="1.1.1", link="public", optional=true}