diff --git a/examples/cpu/go.mod b/examples/cpu/go.mod
index 4c27b27..cdc1b29 100644
--- a/examples/cpu/go.mod
+++ b/examples/cpu/go.mod
@@ -2,4 +2,6 @@ module github.com/felixge/go-profiler-notes/examples/cpu
 
 go 1.15
 
+toolchain go1.26.1
+
 require golang.org/x/sync v0.0.0-20201207232520-09787c993a3a