diff --git a/Cargo.lock b/Cargo.lock
index 22f15aee..5f60f1b8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1421,7 +1421,6 @@ dependencies = [
  "dotenv 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "futures 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "once_cell 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "proc-macro2 1.0.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "sqlx-core 0.2.0",
diff --git a/sqlx-macros/Cargo.toml b/sqlx-macros/Cargo.toml
index 106a68c6..67f719e3 100644
--- a/sqlx-macros/Cargo.toml
+++ b/sqlx-macros/Cargo.toml
@@ -19,7 +19,7 @@ proc-macro = true
 default = []
 
 runtime-async-std = [ "sqlx/runtime-async-std", "async-std" ]
-runtime-tokio = [ "sqlx/runtime-tokio", "tokio", "once_cell" ]
+runtime-tokio = [ "sqlx/runtime-tokio", "tokio", "lazy_static" ]
 
 # database
 mysql = [ "sqlx/mysql" ]
@@ -32,7 +32,6 @@ uuid = [ "sqlx/uuid" ]
 [dependencies]
 async-std = { version = "1.4.0", default-features = false, optional = true }
 tokio = { version = "0.2", optional = true }
-once_cell = { version = "1.3", optional = true }
 dotenv = { version = "0.15.0", default-features = false }
 futures = { version = "0.3.1", default-features = false, features = ["executor"] }
 proc-macro2 = { version = "1.0.6", default-features = false }
@@ -40,4 +39,4 @@ sqlx = { version = "0.2.0", default-features = false, path = "../sqlx-core", pac
 syn = { version = "1.0.11", default-features = false, features = [ "full" ] }
 quote = { version = "1.0.2", default-features = false }
 url = { version = "2.1.0", default-features = false }
-lazy_static = "1.4.0"
+lazy_static = { version = "1.4.0", optional = true }