diff --git a/.gitignore b/.gitignore
index 66fd13c..3170a15 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,3 +13,6 @@
 
 # Dependency directories (remove the comment below to include it)
 # vendor/
+
+# Local copy of LIKWID headers
+/collectors/likwid
diff --git a/collectors/Makefile b/collectors/Makefile
index 53d6bb9..eeba5ce 100644
--- a/collectors/Makefile
+++ b/collectors/Makefile
@@ -1,5 +1,5 @@
 # LIKWID version
-LIKWID_VERSION := 5.4.1
+LIKWID_VERSION := 5.5.1
 LIKWID_INSTALLED_FOLDER := $(shell dirname $$(which likwid-topology 2>/dev/null) 2>/dev/null)
 
 LIKWID_FOLDER := $(CURDIR)/likwid
diff --git a/collectors/likwidMetric.go b/collectors/likwidMetric.go
index b03bb18..0ee099e 100644
--- a/collectors/likwidMetric.go
+++ b/collectors/likwidMetric.go
@@ -331,7 +331,7 @@ func (m *LikwidCollector) Init(config json.RawMessage) error {
 		for _, c := range m.cpulist {
 			m.measureThread.Call(
 				func() {
-					retCode := C.HPMaddThread(c)
+					retCode := C.HPMaddThread(C.uint32_t(c))
 					if retCode != 0 {
 						err := fmt.Errorf("C.HPMaddThread(%v) failed with return code %v", c, retCode)
 						cclog.ComponentError(m.name, err.Error())