2.8.0-dev.1.0 (#1961)

diff --git a/tool/since/dart_sdk.yaml b/tool/since/dart_sdk.yaml
index a0f3bf0..6fdff35 100644
--- a/tool/since/dart_sdk.yaml
+++ b/tool/since/dart_sdk.yaml
@@ -1,3 +1,4 @@
+2.8.0-dev.1.0 : 0.1.108
 2.8.0-dev.0.0 : 0.1.105+1
 2.7.0 : 0.1.104
 2.7.0-dev.2.1 : 0.1.104