diff --git a/eth/tracers/internal/tracetest/README.md b/eth/tracers/internal/tracetest/README.md
index 8c3d5d275f..cd1be91592 100644
--- a/eth/tracers/internal/tracetest/README.md
+++ b/eth/tracers/internal/tracetest/README.md
@@ -7,4 +7,12 @@ In the Geth console do:
 let tx = '0x...'
 loadScript('makeTest.js')
 makeTest(tx, { tracer: 'callTracer' })
-```
\ No newline at end of file
+```
+
+## Updating the existing call tracer test cases
+In case a change is introduced to the output/format of the call tracer, you may use the following invocation to update the expected output with the current output:
+```bash
+UPDATE_TESTS=1 go test ./eth/tracers/internal/tracetest
+```
+
+This will blindly "accept" the current trace response as the correct one, so manual inspection of the updated outputs is advised to ensure they are as expected.