diff --git a/requirements.txt b/requirements.txt
index 21e889a763..574a5272a8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,7 +11,9 @@ future>=0.15.2
 cryptography>=2.1.4
 pyparsing>=2.0.3,<2.4.0
 pyelftools>=0.22
-gdbgui>=0.13.2.0
+gdbgui==0.13.2.0
+# 0.13.2.1 supports Python 3.6+ only
+# Windows is not supported since 0.14.0.0. See https://github.com/cs01/gdbgui/issues/348
 pygdbmi<=0.9.0.2
 # The pygdbmi required max version 0.9.0.2 since 0.9.0.3 is not copatible with latest gdbgui (>=0.13.2.0)
 reedsolo>=1.5.3,<=1.5.4