diff --git a/doc/requirements.txt b/doc/requirements.txt
index cbdc6581..5e10bbf4 100644
--- a/doc/requirements.txt
+++ b/doc/requirements.txt
@@ -6,8 +6,5 @@ testscenarios>=0.4 # Apache-2.0/BSD
 
 # The below is rewquired to build testing module reference
 
-# Include horizon as test requirement
-horizon>=17.1.0  # Apache-2.0
-
 selenium>=2.50.1 # Apache-2.0
 xvfbwrapper>=0.1.3 #license: MIT