diff --git a/sphinx-key/.cargo/config.toml b/sphinx-key/.cargo/config.toml
index 0c5fa2d..d34d4dd 100644
--- a/sphinx-key/.cargo/config.toml
+++ b/sphinx-key/.cargo/config.toml
@@ -29,6 +29,6 @@ build-std-features = ["panic_immediate_abort"] # Required for older ESP-IDF vers
 [env]
 # Note: these variables are not used when using pio builder
 # Enables the esp-idf-sys "native" build feature (`cargo build --features native`) to build against ESP-IDF stable (v4.4)
-ESP_IDF_VERSION = { value = "branch:release/v4.4" }
+ESP_IDF_VERSION = { value = "tag:v4.4.1" }
 # Enables the esp-idf-sys "native" build feature (`cargo build --features native`) to build against ESP-IDF master (mainline)
 #ESP_IDF_VERSION = { value = "master" }