diff --git a/Buildings/package.mo b/Buildings/package.mo
index 8b64a84eda9..88388742ee9 100644
--- a/Buildings/package.mo
+++ b/Buildings/package.mo
@@ -9443,7 +9443,7 @@ on the Buildings library.
 </p>
 <ul>
 <li>
-<a href=\"modelica://Buildings.UsersGuide.ReleaseNotes.Version_8_1_1\">Version 8.1.1</a> (May 11, 2022)
+<a href=\"modelica://Buildings.UsersGuide.ReleaseNotes.Version_8_1_1\">Version 8.1.1</a> (May 12, 2022)
 </li>
 <li>
 <a href=\"modelica://Buildings.UsersGuide.ReleaseNotes.Version_8_1_0\">Version 8.1.0</a> (December 9, 2021)
@@ -9966,7 +9966,7 @@ annotation (
 preferredView="info",
 version="8.1.1",
 versionDate="2021-06-08",
-dateModified="2022-05-11",
+dateModified="2022-05-12",
 uses(Modelica(version="3.2.3")),
 conversion(
   noneFromVersion="8.0.0",
diff --git a/README.md b/README.md
index 0317499c28b..81dc468ce21 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 8.1.1 (2022-05-11)](https://github.com/lbl-srg/modelica-buildings/releases/download/v8.1.1/Buildings-v8.1.1.zip)
+Download [Buildings Library 8.1.1 (2022-05-12)](https://github.com/lbl-srg/modelica-buildings/releases/download/v8.1.1/Buildings-v8.1.1.zip)
 
 ## License