diff --git a/tests/fixtures/rust-source-multiple/rust-func-1/Cargo.toml b/tests/fixtures/rust-source-multiple/rust-func-1/Cargo.toml
index 9b4c46d82..c5ec0d897 100644
--- a/tests/fixtures/rust-source-multiple/rust-func-1/Cargo.toml
+++ b/tests/fixtures/rust-source-multiple/rust-func-1/Cargo.toml
@@ -11,4 +11,4 @@ http = "0.2.5"
 lambda_runtime = "0.4.1"
 log = "0.4.14"
 simple_logger = "1.13.0"
-tokio = "1.6.1"
+tokio = "1.12.0"
diff --git a/tests/fixtures/rust-source-multiple/rust-func-2/Cargo.toml b/tests/fixtures/rust-source-multiple/rust-func-2/Cargo.toml
index 9b4c46d82..c5ec0d897 100644
--- a/tests/fixtures/rust-source-multiple/rust-func-2/Cargo.toml
+++ b/tests/fixtures/rust-source-multiple/rust-func-2/Cargo.toml
@@ -11,4 +11,4 @@ http = "0.2.5"
 lambda_runtime = "0.4.1"
 log = "0.4.14"
 simple_logger = "1.13.0"
-tokio = "1.6.1"
+tokio = "1.12.0"
diff --git a/tests/fixtures/rust-source/rust-func-1/Cargo.toml b/tests/fixtures/rust-source/rust-func-1/Cargo.toml
index 9b4c46d82..c5ec0d897 100644
--- a/tests/fixtures/rust-source/rust-func-1/Cargo.toml
+++ b/tests/fixtures/rust-source/rust-func-1/Cargo.toml
@@ -11,4 +11,4 @@ http = "0.2.5"
 lambda_runtime = "0.4.1"
 log = "0.4.14"
 simple_logger = "1.13.0"
-tokio = "1.6.1"
+tokio = "1.12.0"