diff --git a/go.mod b/go.mod
index 2b8bb90d2..d47513a25 100644
--- a/go.mod
+++ b/go.mod
@@ -23,12 +23,12 @@ require (
 	golang.org/x/xerrors v0.0.0-20220907171357-04be3eba64a2
 	gonum.org/v1/plot v0.12.0
 	nhooyr.io/websocket v1.8.7
-	oss.terrastruct.com/cmdlog v0.0.0-20221129200109-540ef52ff07d
+	oss.terrastruct.com/cmdlog v0.0.0-20221201084049-dd840835d2eb
 	oss.terrastruct.com/diff v1.0.2-0.20221116222035-8bf4dd3ab541
 	oss.terrastruct.com/xcontext v0.0.0-20221018000442-50fdafb12f4f
 	oss.terrastruct.com/xdefer v0.0.0-20221017222355-6f3b6e4d1557
 	oss.terrastruct.com/xjson v0.0.0-20221018000420-4986731c4c4a
-	oss.terrastruct.com/xos v0.0.0-20221018030138-c96e7ae96e5d
+	oss.terrastruct.com/xos v0.0.0-20221130233107-5fb84d57c9e3
 	oss.terrastruct.com/xrand v0.0.0-20221020211818-4ac08e618333
 	rogchap.com/v8go v0.7.1-0.20221102201510-1f00b5007d95
 )
diff --git a/go.sum b/go.sum
index 9eca1dfde..dcd593f11 100644
--- a/go.sum
+++ b/go.sum
@@ -798,8 +798,8 @@ honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9
 honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
 nhooyr.io/websocket v1.8.7 h1:usjR2uOr/zjjkVMy0lW+PPohFok7PCow5sDjLgX4P4g=
 nhooyr.io/websocket v1.8.7/go.mod h1:B70DZP8IakI65RVQ51MsWP/8jndNma26DVA/nFSCgW0=
-oss.terrastruct.com/cmdlog v0.0.0-20221129200109-540ef52ff07d h1:oc3cqW4bWaosVpfM8yNLAPSDMjLrVYP2ztF7w3tRvws=
-oss.terrastruct.com/cmdlog v0.0.0-20221129200109-540ef52ff07d/go.mod h1:ROL3yxl2X+S3O+Rls00qdX6aMh+p1dF8IdxDRwDDpsg=
+oss.terrastruct.com/cmdlog v0.0.0-20221201084049-dd840835d2eb h1:6PiU5eI37Yb6xmgycuRlOh/a0TDQ55nVjJiPDuTEwRw=
+oss.terrastruct.com/cmdlog v0.0.0-20221201084049-dd840835d2eb/go.mod h1:xBRUvQjl+yaEs0WAc7pkZDEnbFYt6nUyblnb+0g+TzM=
 oss.terrastruct.com/diff v1.0.2-0.20221116222035-8bf4dd3ab541 h1:I9B1O1IJ6spivIQxbFRZmbhAwVeLwrcQRR1JbYUOvrI=
 oss.terrastruct.com/diff v1.0.2-0.20221116222035-8bf4dd3ab541/go.mod h1:ags2QDy/T6jr69hT6bpmAmhr2H98n9o8Atf3QlUJPiU=
 oss.terrastruct.com/xcontext v0.0.0-20221018000442-50fdafb12f4f h1:7voRCwKM7TZkTo9u7hj+uV/zXoVB8czWrTq6MVIh3dg=
@@ -808,8 +808,8 @@ oss.terrastruct.com/xdefer v0.0.0-20221017222355-6f3b6e4d1557 h1:rPbhJbN1q7B4tnp
 oss.terrastruct.com/xdefer v0.0.0-20221017222355-6f3b6e4d1557/go.mod h1:plvfydF5METAlsbpeuSz44jckaOwrCWX3M0kTLoCA4I=
 oss.terrastruct.com/xjson v0.0.0-20221018000420-4986731c4c4a h1:AAcupsjBwpbcyLASX0ppDlxbfHWb5Neq5gWdGpLfaSA=
 oss.terrastruct.com/xjson v0.0.0-20221018000420-4986731c4c4a/go.mod h1:XJ71qiTzk/dbTWuYbuLJuRpBdKFN06Sk5FdFpq2TNmE=
-oss.terrastruct.com/xos v0.0.0-20221018030138-c96e7ae96e5d h1:rrPTkbAfsRTW1WLoTzEofS9AprsHovy9bwvA/wC8Dys=
-oss.terrastruct.com/xos v0.0.0-20221018030138-c96e7ae96e5d/go.mod h1:uSONPDInIwglnC+0zYs8YOjiUD8ZUSnqDTTI82j7Oro=
+oss.terrastruct.com/xos v0.0.0-20221130233107-5fb84d57c9e3 h1:bchGZ5WryJNqr/yZ00rTcgZh1AComRFwKKBWOIxzJZE=
+oss.terrastruct.com/xos v0.0.0-20221130233107-5fb84d57c9e3/go.mod h1:lUSNCN0HA3pWHOMXT6gRNJtjg1U5t0TEEwAzPyV6enA=
 oss.terrastruct.com/xrand v0.0.0-20221020211818-4ac08e618333 h1:7EdxwXM75Id1VIN71QbE8bLzZRMs0qD7olnDw5gbI7w=
 oss.terrastruct.com/xrand v0.0.0-20221020211818-4ac08e618333/go.mod h1:O7TAoBmlQhoi46RdgVikDcoLRb/vLflhkXCAd+nO4SM=
 rogchap.com/v8go v0.7.1-0.20221102201510-1f00b5007d95 h1:r89YHVIWeQj/A3Nu6462eqARUECJlJkLRk36pfML1xA=
diff --git a/lib/imgbundler/imgbundler_test.go b/lib/imgbundler/imgbundler_test.go
index 4855fc0cd..ad5e4fea9 100644
--- a/lib/imgbundler/imgbundler_test.go
+++ b/lib/imgbundler/imgbundler_test.go
@@ -88,7 +88,7 @@ width="328" height="587" viewBox="-100 -131 328 587"><style type="text/css">
 
 		Env: xos.NewEnv(os.Environ()),
 	}
-	ms.Log = cmdlog.Log(ms.Env, os.Stderr)
+	ms.Log = cmdlog.NewTB(ms.Env, t)
 
 	httpClient.Transport = roundTripFunc(func(req *http.Request) *http.Response {
 		respRecorder := httptest.NewRecorder()
@@ -204,7 +204,7 @@ width="328" height="587" viewBox="-100 -131 328 587"><style type="text/css">
 
 		Env: xos.NewEnv(os.Environ()),
 	}
-	ms.Log = cmdlog.Log(ms.Env, os.Stderr)
+	ms.Log = cmdlog.NewTB(ms.Env, t)
 	out, err := BundleLocal(ctx, ms, []byte(sampleSVG))
 	if err != nil {
 		t.Fatal(err)
diff --git a/lib/xmain/xmain.go b/lib/xmain/xmain.go
index 18eba1367..80de10137 100644
--- a/lib/xmain/xmain.go
+++ b/lib/xmain/xmain.go
@@ -41,7 +41,7 @@ func Main(run RunFunc) {
 
 		Env: xos.NewEnv(os.Environ()),
 	}
-	ms.Log = cmdlog.Log(ms.Env, os.Stderr)
+	ms.Log = cmdlog.New(ms.Env, os.Stderr)
 	ms.Opts = NewOpts(ms.Env, ms.Log, args)
 
 	sigs := make(chan os.Signal, 1)