From d93a592c67acae5b93dbf633196a5452c463c484 Mon Sep 17 00:00:00 2001
From: glendc <contact@glendc.com>
Date: Mon, 22 Jul 2024 14:01:24 +0200
Subject: [PATCH] push_back was only added in 0.3.22 of futures

---
 examples/Cargo.toml      | 4 ++--
 tower-service/Cargo.toml | 2 +-
 tower/Cargo.toml         | 2 +-
 3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/examples/Cargo.toml b/examples/Cargo.toml
index a39ddb9ca..a2d304887 100644
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@@ -8,11 +8,11 @@ edition = "2018"
 # [dependencies] instead.
 [dev-dependencies]
 tower = { version = "0.4", path = "../tower", features = ["full"] }
-tower-service = "0.3" 
+tower-service = "0.3"
 tokio = { version = "1.0", features = ["full"] }
 rand = "0.8"
 pin-project = "1.0"
-futures = "0.3"
+futures = "^0.3.22"
 tracing = "0.1"
 tracing-subscriber = "0.2"
 hdrhistogram = "7"
diff --git a/tower-service/Cargo.toml b/tower-service/Cargo.toml
index 68a5a8768..cdd2ede32 100644
--- a/tower-service/Cargo.toml
+++ b/tower-service/Cargo.toml
@@ -25,4 +25,4 @@ edition = "2018"
 http = "0.2"
 tower-layer = { version = "0.3", path = "../tower-layer" }
 tokio = { version = "1", features = ["macros", "time"] }
-futures = "0.3"
+futures = "^0.3.22"
diff --git a/tower/Cargo.toml b/tower/Cargo.toml
index 3e199a844..b477e4c34 100644
--- a/tower/Cargo.toml
+++ b/tower/Cargo.toml
@@ -81,7 +81,7 @@ pin-project-lite = { version = "0.2.7", optional = true }
 sync_wrapper = { version = "0.1.1", optional = true }
 
 [dev-dependencies]
-futures = "0.3"
+futures = "^0.3.22"
 hdrhistogram = { version = "7.0", default-features = false }
 pin-project-lite = "0.2.7"
 tokio = { version = "1.6.2", features = ["macros", "sync", "test-util", "rt-multi-thread"] }