diff --git a/lower-constraints.txt b/lower-constraints.txt
index 03572e1c..53046481 100644
--- a/lower-constraints.txt
+++ b/lower-constraints.txt
@@ -83,6 +83,7 @@ pyOpenSSL==17.1.0
 pyparsing==2.1.0
 pyperclip==1.5.27
 pyScss==1.3.4
+pytest==5.3.5
 python-cinderclient==3.3.0
 python-dateutil==2.5.3
 python-glanceclient==2.8.0
diff --git a/test-requirements.txt b/test-requirements.txt
index 03af7ac4..9967fc3a 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -11,3 +11,6 @@ selenium>=2.50.1 # Apache-2.0
 # Docs Requirements
 sphinx!=1.6.6,!=1.6.7,>=1.6.2;python_version>='3.4'  # BSD
 oslosphinx>=4.7.0 # Apache-2.0
+
+# Horizon
+pytest>=5.3.5 # MIT