diff --git a/plotly/Cargo.toml b/plotly/Cargo.toml
index d60ebb42..a0840115 100644
--- a/plotly/Cargo.toml
+++ b/plotly/Cargo.toml
@@ -85,7 +85,7 @@ web-sys = { version = "0.3.77", features = [
 [dev-dependencies]
 csv = "1.1"
 image = "0.25"
-itertools = ">=0.10, <0.15"
+itertools = ">=0.10, <0.16"
 itertools-num = "0.1"
 ndarray = "0.17"
 plotly_static = { path = "../plotly_static" }