diff --git a/code/test/unit/CMakeLists.txt b/code/test/unit/CMakeLists.txt
index 58c3d5d6..7ea5abdc 100644
--- a/code/test/unit/CMakeLists.txt
+++ b/code/test/unit/CMakeLists.txt
@@ -56,7 +56,7 @@ target_compile_options(unity BEFORE PRIVATE
     -DUNITY_OUTPUT_COLOR
 )
 
-set(esp8266_version 9fcf14f81fa9be589530e9596b7c5a264dc81ee8)
+set(esp8266_version 313b3c07ecccbe6fee24aa9fa447c4aed16ca499)
 
 FetchContent_Declare(
     esp8266git