diff --git a/tools/config/mbed_requirements.txt b/tools/config/mbed_requirements.txt
index dd69002acf..0b4e0f3210 100644
--- a/tools/config/mbed_requirements.txt
+++ b/tools/config/mbed_requirements.txt
@@ -5,7 +5,7 @@ jinja2>=2.11.3
 intelhex>=2.3.0,<3.0.0
 mbed-tools
 mbed-os-tools
-pyelftools>=0.27,<=0.28
+pyelftools==0.28
 
 # needed for signing secure images
 cryptography>=3.2,<4