diff --git a/Buildings/Resources/src/fluid/heatpumps/calibration/PythonModel/refrigerants.py b/Buildings/Resources/src/fluid/heatpumps/calibration/PythonModel/refrigerants.py
index 429f115c1db..3e83dfb277f 100644
--- a/Buildings/Resources/src/fluid/heatpumps/calibration/PythonModel/refrigerants.py
+++ b/Buildings/Resources/src/fluid/heatpumps/calibration/PythonModel/refrigerants.py
@@ -281,7 +281,7 @@ def _dpdv(self, TVap, vVap):
 
         dpdv = -R*TVap/(vVap - b)**2.0
         for i in range(len(A)):
-            dpdv = dpdv + (-i)*(A[i] + B[i]*TVap
+            dpdv = dpdv - (2.0+i)*(A[i] + B[i]*TVap
                                 + C[i]*np.exp(-k*TVap/self.TCri)) \
                                 / (vVap - b)**(i + 3.0)
         return dpdv
diff --git a/Buildings/package.mo b/Buildings/package.mo
index 1e0edfdaeef..807a0371d81 100644
--- a/Buildings/package.mo
+++ b/Buildings/package.mo
@@ -8097,7 +8097,7 @@ on the Buildings library.
 </p>
 <ul>
 <li>
-<a href=\"modelica://Buildings.UsersGuide.ReleaseNotes.Version_7_0_1\">Version 7.0.1</a> (May 28, 2021)
+<a href=\"modelica://Buildings.UsersGuide.ReleaseNotes.Version_7_0_1\">Version 7.0.1</a> (June 4, 2021)
 </li>
 <li>
 <a href=\"modelica://Buildings.UsersGuide.ReleaseNotes.Version_7_0_0\">Version 7.0.0</a> (May 28, 2020)
@@ -8580,7 +8580,7 @@ annotation (
 preferredView="info",
 version="7.0.1",
 versionDate="2020-05-28",
-dateModified="2021-05-28",
+dateModified="2021-06-04",
 uses(Modelica(version="3.2.3")),
 conversion(
   noneFromVersion="7.0.0",
diff --git a/README.md b/README.md
index 09669ca6909..b8fc5dc80c1 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ The main project site is http://simulationresearch.lbl.gov/modelica.
 
 ## Current release
 
-Download [Buildings Library 7.0.1 (2021-05-28)](https://github.com/lbl-srg/modelica-buildings/releases/download/v7.0.1/Buildings-v7.0.1.zip)
+Download [Buildings Library 7.0.1 (2021-06-04)](https://github.com/lbl-srg/modelica-buildings/releases/download/v7.0.1/Buildings-v7.0.1.zip)
 
 ## License