diff --git a/Cargo.lock b/Cargo.lock
index d9e61e8..520c2f5 100644
--- a/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
index dd84482..9ea5f85 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "kurobako"
-version = "0.2.6"
+version = "0.2.7"
 authors = ["Takeru Ohta <phjgt308@gmail.com>"]
 edition = "2018"
 description = "A black-box optimization benchmarking framework"