diff --git a/platformio.ini b/platformio.ini
index fb742b1..611cccc 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -21,9 +21,9 @@ src_dir     = Src
 
 [env]
 ; use new GD32 platform and the bleeding-edge SPL package for it
-platform = https://github.com/CommunityGD32Cores/platform-gd32.git
+platform = https://github.com/CommunityGD32Cores/platform-gd32.git#e712045bdba54790ed2e07c47a421345340efb31
 platform_packages = 
-    framework-spl-gd32@https://github.com/CommunityGD32Cores/gd32-pio-spl-package.git
+    framework-spl-gd32@https://github.com/CommunityGD32Cores/gd32-pio-spl-package.git#67a6fe90b20e00b11a9a52f55d318b7d15eeed84
 
 ;================================================================