diff --git a/go.work b/go.work
index 5ab3e47..af30c3e 100644
--- a/go.work
+++ b/go.work
@@ -1,5 +1,7 @@
 go 1.25.11
 
+toolchain go1.26.4
+
 // Sink and source modules with a non-stdlib dependency are intentionally NOT
 // listed here: the SDK-backed sink destinations (the AWS family, redis, nats,
 // kafka, gcppubsub, otel, statsd) and the modules whose integration tests pull
diff --git a/telemetry/datadog/go.mod b/telemetry/datadog/go.mod
index 8a02584..fd34dbc 100644
--- a/telemetry/datadog/go.mod
+++ b/telemetry/datadog/go.mod
@@ -2,6 +2,8 @@ module github.com/stablekernel/crucible/telemetry/datadog
 
 go 1.25.11
 
+toolchain go1.26.4
+
 require (
 	github.com/DataDog/datadog-go/v5 v5.8.3
 	github.com/DataDog/dd-trace-go/v2 v2.8.2