diff --git a/.github/scripts/define_versions.sh b/.github/scripts/define_versions.sh
index 30fcacf8a..3c91a3530 100644
--- a/.github/scripts/define_versions.sh
+++ b/.github/scripts/define_versions.sh
@@ -21,9 +21,9 @@ versions+=" 1.6.10"
 versions+=" 1.6.13"
 versions+=" 1.6.14"
 versions+=" 1.6.15"
+versions+=" 1.6.16"
 
 # future versions (release tags that are expected)
-versions+=" 1.6.16"
 versions+=" 1.6.17"
 versions+=" 1.6.18"
 
diff --git a/CHANGES.rst b/CHANGES.rst
index 7327e6e5f..426c73297 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -28,7 +28,7 @@ describe the future plans.
 1.6.16
 ******
 
-release expected by 2023-05-26
+release expected 2023-05-23
 
 Enhancements
 ------------
diff --git a/docs/source/_static/switcher.json b/docs/source/_static/switcher.json
index 19fc5c06b..d6aaca189 100644
--- a/docs/source/_static/switcher.json
+++ b/docs/source/_static/switcher.json
@@ -5,7 +5,12 @@
         "url": "https://bcda-aps.github.io/apstools/dev/"
     },
     {
-        "name": "1.6.15 (latest)",
+        "name": "1.6.16 (latest)",
+        "version": "1.6.16",
+        "url": "https://bcda-aps.github.io/apstools/1.6.16/"
+    },
+    {
+        "name": "1.6.15",
         "version": "1.6.15",
         "url": "https://bcda-aps.github.io/apstools/1.6.15/"
     },