diff --git a/README.md b/README.md
index e10820f..75885fd 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@
  - pytlv
  - cmd2 >= 1.3.0 but < 2.0.0
  - jsonpath-ng
- - construct
+ - construct >= 2.9.51
  - bidict
  - gsm0338
 
diff --git a/requirements.txt b/requirements.txt
index 320cc7a..4f037da 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@
 pytlv
 cmd2==1.5
 jsonpath-ng
-construct
+construct>=2.9.51
 bidict
 gsm0338
 pyyaml>=5.1