diff --git a/DESCRIPTION b/DESCRIPTION
index 4c122449..f1ad3420 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,11 +1,10 @@
 Package: iglu
 Type: Package
 Title: Interpreting Glucose Data from Continuous Glucose Monitors
-Version: 3.5.3
+Version: 4.0.0
 Authors@R: c(person("Elizabeth", "Chun",
             role = c("aut")),
             person("Steve", "Broll",
-            email = "stevebroll@tamu.edu",
             role = c("aut")),
             person("David", "Buchanan",
             role = c("aut")),
@@ -14,8 +13,7 @@ Authors@R: c(person("Elizabeth", "Chun",
             email = "muschellij2@gmail.com",
             comment = c(ORCID = "0000-0001-6469-1750")),
             person("Nathaniel", "Fernandes",
-            role = c("aut"), 
-            email="njfernandes24@tamu.edu"),
+            role = c("aut")),
             person("Jung Hoon", "Seo",
             role = c("ctb")),
             person("Johnathan", "Shih",
@@ -23,22 +21,17 @@ Authors@R: c(person("Elizabeth", "Chun",
             person("Jacek", "Urbanek",
             role = c("ctb")),
             person("John", "Schwenck",
-            role = c("ctb"),
-            email = "jschwenck@stat.tamu.edu"),
+            role = c("ctb")),
             person("Marielle", "Hicban",
-            role = c("ctb"),
-            email = "marbhic@tamu.edu"),
+            role = c("ctb")),
             person("Mary", "Martin",
-            role = c("ctb"),
-            email = "marymartin16@tamu.edu"),
+            role = c("ctb")),
             person("Pratik", "Patel",
-            role = c("ctb"),
-            email = "p.pratik99@tamu.edu"),
+            role = c("ctb")),
             person("Meyappan", "Ashok",
             role = c("ctb")),
             person("Nhan", "Nguyen",
-            role = c("ctb"),
-            email = "nhannguyen993@tamu.edu"),
+            role = c("ctb")),
             person("Irina", "Gaynanova",
             email = "irinagn@umich.edu",role = c("aut", "cre"),
             comment = c(ORCID = "0000-0002-4116-0268")))
diff --git a/NEWS.md b/NEWS.md
index 492b25b2..abd819d2 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,3 +1,7 @@
+# iglu 4.0.0
+* CRAN release to match upcoming paper summarizing updated MAGE algorithm, episode calculation functionality, meal metrics, clustering and new example data inclusion
+
+
 # iglu 3.5.3
 * minor bugfix in MAGE: stopped extraneous warning from being thrown
 * Added tests for mage + mean + median + sd
diff --git a/cran-comments.md b/cran-comments.md
index d7feb85d..bcc94341 100644
--- a/cran-comments.md
+++ b/cran-comments.md
@@ -1,6 +1,8 @@
 ## Test environments
-* local R installation, R 4.0.2
-* ubuntu 16.04 (on travis-ci), R 4.0.2
+* local R installation, R 4.2.3
+* macos-latest (release) via Github Actions
+* windows-latest (release) via Github Actions
+* ubuntu-latest (devel, release) via Github Actions
 * win-builder (devel)
 
 ## R CMD check results