diff --git a/tembo-cli/Cargo.toml b/tembo-cli/Cargo.toml
index 5fe614616..ee04a612a 100644
--- a/tembo-cli/Cargo.toml
+++ b/tembo-cli/Cargo.toml
@@ -99,4 +99,7 @@ openssl = { version = "0.10", features = ["vendored"] }
 [dev-dependencies]
 assert_cmd = "2.0.8"
 predicates = "2.1.5"
-rstest = "0.18"
\ No newline at end of file
+rstest = "0.18"
+
+[env]
+RUST_TEST_THREADS = "1"
\ No newline at end of file