diff --git a/BuildSysPro/IBPSA/Resources/src/fluid/heatpumps/calibration/doc/requirements.txt b/BuildSysPro/IBPSA/Resources/src/fluid/heatpumps/calibration/doc/requirements.txt
index caacda67..8f6259a3 100644
--- a/BuildSysPro/IBPSA/Resources/src/fluid/heatpumps/calibration/doc/requirements.txt
+++ b/BuildSysPro/IBPSA/Resources/src/fluid/heatpumps/calibration/doc/requirements.txt
@@ -1,6 +1,6 @@
 alabaster==0.7.12
 Babel==2.9.1
-certifi==2022.12.7
+certifi==2023.7.22
 charset-normalizer==2.0.12
 docutils==0.17.1
 idna==3.3