SDK 1.3.1 release
diff --git a/pico_sdk_version.cmake b/pico_sdk_version.cmake
index a9154cc..e2ecdac 100644
--- a/pico_sdk_version.cmake
+++ b/pico_sdk_version.cmake
@@ -9,7 +9,7 @@
 set(PICO_SDK_VERSION_REVISION 1)
 # PICO_BUILD_DEFINE: PICO_SDK_VERSION_PRE_RELEASE_ID, optional SDK pre-release version identifier, type=string, group=pico_base
 # PICO_CONFIG: PICO_SDK_VERSION_PRE_RELEASE_ID, optional SDK pre-release version identifier, type=string, group=pico_base
-set(PICO_SDK_VERSION_PRE_RELEASE_ID develop)
+#set(PICO_SDK_VERSION_PRE_RELEASE_ID develop)
 
 # PICO_BUILD_DEFINE: PICO_SDK_VERSION_STRING, SDK version, type=string, group=pico_base
 # PICO_CONFIG: PICO_SDK_VERSION_STRING, SDK version, type=string, group=pico_base