diff --git a/build.ps1 b/build.ps1
index 145fa9d959b2..36ffafb49dcf 100644
--- a/build.ps1
+++ b/build.ps1
@@ -64,7 +64,7 @@ bazel build //... `
   `-`-experimental_profile_include_target_label `
   `-`-build_event_json_file build-events.json `
   `-`-build_event_publish_all_actions `
-  `-`-experimental_execution_log_file ${ARTIFACT_DIRS}/logs/build_execution_windows.log
+  `-`-execution_log_json_file ${ARTIFACT_DIRS}/logs/build_execution_windows.json
 
 bazel shutdown
 
diff --git a/build.sh b/build.sh
index fbd29d1c89c0..8a64f51c8394 100755
--- a/build.sh
+++ b/build.sh
@@ -35,7 +35,7 @@ bazel build //... \
   --experimental_profile_include_target_label \
   --build_event_json_file build-events.json \
   --build_event_publish_all_actions \
-  --experimental_execution_log_file "$ARTIFACT_DIRS/logs/build_execution${execution_log_postfix}.log"
+  --execution_log_json_file "$ARTIFACT_DIRS/logs/build_execution${execution_log_postfix}.json"
 
 # Set up a shared PostgreSQL instance.
 export POSTGRESQL_ROOT_DIR="${TMPDIR:-/tmp}/daml/postgresql"
@@ -79,7 +79,7 @@ bazel test //... \
   --experimental_profile_include_target_label \
   --build_event_json_file test-events.json \
   --build_event_publish_all_actions \
-  --experimental_execution_log_file "$ARTIFACT_DIRS/logs/test_execution${execution_log_postfix}.log"
+  --execution_log_json_file "$ARTIFACT_DIRS/logs/test_execution${execution_log_postfix}.json"
 
 # Make sure that Bazel query works.
 bazel query 'deps(//...)' >/dev/null