diff --git a/DESCRIPTION b/DESCRIPTION
index f4ba0e1..59bc1ec 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,6 +1,6 @@
 Package: typetracer
 Title: Trace Function Parameter Types
-Version: 0.1.1.002
+Version: 0.1.1.003
 Authors@R: c(
     person("Mark", "Padgham", , "mark.padgham@email.com", role = c("aut", "cre"),
            comment = c(ORCID = "0000-0003-2172-5265")),
diff --git a/R/load-and-clear-traces.R b/R/load-and-clear-traces.R
index d075af3..2decf94 100644
--- a/R/load-and-clear-traces.R
+++ b/R/load-and-clear-traces.R
@@ -27,8 +27,10 @@ load_traces <- function (files = FALSE, quiet = FALSE) {
         fn_name <- tr_i$fn_name
         par_formals <- tr_i$formals
         num_traces <- tr_i$num_traces
+        trace_source <- tr_i$source
+
         tr_i <- tr_i [which (!names (tr_i) %in%
-            c ("fn_name", "formals", "num_traces"))]
+            c ("fn_name", "formals", "num_traces", "source"))]
         fn_call_hash <- gsub ("^.*typetrace\\_|\\.Rds$", "", i)
 
         # simple vector columns:
@@ -51,6 +53,7 @@ load_traces <- function (files = FALSE, quiet = FALSE) {
         tibble::tibble (
             trace_name = i,
             trace_number = num_traces,
+            trace_source = trace_source,
             fn_name = fn_name,
             fn_call_hash = fn_call_hash,
             par_name = par_name,
diff --git a/R/trace-package.R b/R/trace-package.R
index 79db5e6..67c385f 100644
--- a/R/trace-package.R
+++ b/R/trace-package.R
@@ -55,7 +55,8 @@ trace_package <- function (package = NULL,
 
     if ("examples" %in% types) {
         trace_names <- trace_package_exs (package, functions)
-        traces <- list_traces ()
+        traces_ex <- list_traces ()
+        add_trace_source (traces_ex, "examples")
     }
     if ("tests" %in% types) {
         if (testthat_is_parallel (pkg_dir) && !pre_installed) {
@@ -66,6 +67,9 @@ trace_package <- function (package = NULL,
             test_traces <- NULL
         } else {
             test_traces <- trace_package_tests (package, pkg_dir, pre_installed)
+            traces_test <- list_traces ()
+            traces_test <- traces_test [which (!traces_test %in% traces_ex)]
+            add_trace_source (traces_test, "tests")
         }
     }
 
@@ -359,3 +363,14 @@ join_test_trace_data <- function (traces, test_traces) {
 
     return (traces)
 }
+
+add_trace_source <- function (traces, trace_source) {
+
+    checkmate::assert_character (trace_source)
+
+    for (i in traces) {
+        tr <- readRDS (i)
+        tr$source <- trace_source
+        saveRDS (tr, i)
+    }
+}
diff --git a/codemeta.json b/codemeta.json
index 1dac91e..8062523 100644
--- a/codemeta.json
+++ b/codemeta.json
@@ -8,7 +8,7 @@
   "codeRepository": "https://github.com/mpadge/typetracer",
   "issueTracker": "https://github.com/mpadge/typetracer/issues",
   "license": "https://spdx.org/licenses/MIT",
-  "version": "0.1.1.002",
+  "version": "0.1.1.003",
   "programmingLanguage": {
     "@type": "ComputerLanguage",
     "name": "R",