diff --git a/R/epipredict-data.R b/R/epipredict-data.R
index 708ab08..f0ef2f7 100644
--- a/R/epipredict-data.R
+++ b/R/epipredict-data.R
@@ -3,7 +3,7 @@
 #' This data source of confirmed COVID-19 cases and deaths is based on reports
 #' made available by the Center for Systems Science and Engineering at Johns
 #' Hopkins University, as downloaded from the CMU Delphi COVIDcast Epidata
-#' API. This example data is a snapshot as of March 20, 2024, and
+#' API. This example data is a snapshot as of May 31, 2022, and
 #' ranges from December 31, 2020 to December 31, 2021. It
 #' includes all states.
 #'
diff --git a/R/epiprocess-data.R b/R/epiprocess-data.R
index 0838983..232735a 100644
--- a/R/epiprocess-data.R
+++ b/R/epiprocess-data.R
@@ -208,3 +208,42 @@
 #' * Furthermore, the data has been limited to a very small number of rows,
 #'   formatted into an `epi_df`, and the signal names slightly altered.
 "jhu_confirmed_cumulative_num"
+
+#' JHU daily COVID-19 cases and deaths rates from all states
+#'
+#' This data source of confirmed COVID-19 cases and deaths is based on reports
+#' made available by the Center for Systems Science and Engineering at Johns
+#' Hopkins University, as downloaded from the CMU Delphi COVIDcast Epidata
+#' API. This example data is a snapshot as of May 31, 2022, and
+#' ranges from March 1, 2020 to December 31, 2021. It
+#' includes all states.
+#'
+#' @format An [`epiprocess::epi_df`] (object of class `c("epi_df", "tbl_df", "tbl", "data.frame")`) with 37576 rows and 4 columns.
+#' @section Data dictionary:
+#' The data has columns:
+#' \describe{
+#'   \item{geo_value}{the geographic value associated with each row
+#'       of measurements.}
+#'   \item{time_value}{the time value associated with each row of measurements.}
+#'   \item{case_rate}{7-day average signal of number of new
+#'       confirmed COVID-19 cases per 100,000 population, daily}
+#'   \item{death_rate}{7-day average signal of number of new confirmed
+#'       deaths due to COVID-19 per 100,000 population, daily}
+#' }
+#' @source This object contains a modified part of the
+#'   \href{https://github.com/CSSEGISandData/COVID-19}{COVID-19 Data Repository by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University}
+#'   as \href{https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/jhu-csse.html}{republished in the COVIDcast Epidata API}.
+#'   This data set is licensed under the terms of the
+#'   \href{https://creativecommons.org/licenses/by/4.0/}{Creative Commons Attribution 4.0 International license}
+#'   by the Johns Hopkins University on behalf of its Center for Systems Science
+#'   in Engineering. Copyright Johns Hopkins University 2020.
+#'
+#' Modifications:
+#' * \href{https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/jhu-csse.html}{From the COVIDcast Epidata API}:
+#'   These signals are taken directly from the JHU CSSE
+#'   \href{https://github.com/CSSEGISandData/COVID-19}{COVID-19 GitHub repository}
+#'   without changes. The 7-day average signals are computed by Delphi by
+#'   calculating moving averages of the preceding 7 days, so the signal for
+#'   June 7 is the average of the underlying data for June 1 through 7,
+#'   inclusive.
+"covid_case_death_rates_extended"
diff --git a/R/sysdata.rda b/R/sysdata.rda
index 2dc6716..73ef614 100644
Binary files a/R/sysdata.rda and b/R/sysdata.rda differ
diff --git a/data-raw/case_death_rate_archive_tbl.R b/data-raw/case_death_rate_archive_tbl.R
index 5e8040d..173711b 100644
--- a/data-raw/case_death_rate_archive_tbl.R
+++ b/data-raw/case_death_rate_archive_tbl.R
@@ -47,26 +47,17 @@ case_death_rate_archive_tbl <- epix_merge(
 # Calculate 7-day averages for case and death rates.
 case_death_rate_archive_tbl <- case_death_rate_archive_tbl %>%
   epix_slide(
-    before = 365000L, ref_time_values = fc_time_values,
+    .before = 365000L, .versions = fc_time_values,
     function(x, gk, rtv) {
       x %>%
         group_by(geo_value) %>%
-        epi_slide_mean(case_rate, before = 6L) %>%
+        epi_slide_mean(case_rate, .align = "right", .window_size = 7L) %>%
         rename(case_rate_7d_av = slide_value_case_rate) %>%
-        epi_slide_mean(death_rate, before = 6L) %>%
+        epi_slide_mean(death_rate, .align = "right", .window_size = 7L) %>%
         ungroup() %>%
         rename(death_rate_7d_av = slide_value_death_rate)
     }
   ) %>%
-  rename(
-    version = time_value,
-    time_value = slide_value_time_value,
-    geo_value = slide_value_geo_value,
-    case_rate = slide_value_case_rate,
-    death_rate = slide_value_death_rate,
-    case_rate_7d_av = slide_value_case_rate_7d_av,
-    death_rate_7d_av = slide_value_death_rate_7d_av
-  ) %>%
   as_epi_archive(compactify = TRUE)
 # Convert DT component back to tibble.
 case_death_rate_archive_tbl <- case_death_rate_archive_tbl$DT %>%
diff --git a/data-raw/covid_case_death_rates_extension_tbl.R b/data-raw/covid_case_death_rates_extension_tbl.R
new file mode 100644
index 0000000..a8b3093
--- /dev/null
+++ b/data-raw/covid_case_death_rates_extension_tbl.R
@@ -0,0 +1,39 @@
+library(dplyr)
+library(epidatr)
+
+source(here::here("data-raw/_helper.R"))
+
+d <- as.Date("2022-05-31")
+
+x <- pub_covidcast(
+  source = "jhu-csse",
+  signals = "confirmed_7dav_incidence_prop",
+  time_type = "day",
+  geo_type = "state",
+  time_values = epirange(20200301, 20201231 - 1),
+  geo_values = "*",
+  as_of = d
+) %>%
+  select(geo_value, time_value, case_rate = value)
+
+y <- pub_covidcast(
+  source = "jhu-csse",
+  signals = "deaths_7dav_incidence_prop",
+  time_type = "day",
+  geo_type = "state",
+  time_values = epirange(20200301, 20201231 - 1),
+  geo_values = "*",
+  as_of = d
+) %>%
+  select(geo_value, time_value, death_rate = value)
+
+covid_case_death_rates_extension_tbl <- x %>%
+  full_join(y, by = c("geo_value", "time_value")) %>%
+  as_tibble()
+
+# We're trying to do:
+#   usethis::use_data(covid_case_death_rates_extension_tbl, internal = TRUE, overwrite = TRUE, compress = "xz")
+# but `usethis::use_data` can only store multiple objects if they're added in
+# the same call. This workaround is from
+# https://github.com/r-lib/usethis/issues/1512
+save_to_sysdata(covid_case_death_rates_extension_tbl, "covid_case_death_rates_extension_tbl")
diff --git a/data/covid_case_death_rates_extended.R b/data/covid_case_death_rates_extended.R
new file mode 100644
index 0000000..ef1a2d8
--- /dev/null
+++ b/data/covid_case_death_rates_extended.R
@@ -0,0 +1,17 @@
+delayedAssign("covid_case_death_rates_extended", local({
+  if (requireNamespace("epiprocess", quietly = TRUE)) {
+    d <- as.Date("2022-05-31")
+    epiprocess::as_epi_df(
+      dplyr::bind_rows(
+        epidatasets:::covid_case_death_rates_extension_tbl,
+        epidatasets:::covid_case_death_rates_tbl
+      )
+      , as_of = d)
+  } else {
+    warning("Since the package `epiprocess` is not installed, this object will be loaded as a tibble (class `tbl_df`)")
+    dplyr::bind_rows(
+      epidatasets:::covid_case_death_rates_extension_tbl,
+      epidatasets:::covid_case_death_rates_tbl
+    )
+  }
+}))
diff --git a/man/covid_case_death_rates.Rd b/man/covid_case_death_rates.Rd
index 1111a30..06c12da 100644
--- a/man/covid_case_death_rates.Rd
+++ b/man/covid_case_death_rates.Rd
@@ -34,7 +34,7 @@ covid_case_death_rates
 This data source of confirmed COVID-19 cases and deaths is based on reports
 made available by the Center for Systems Science and Engineering at Johns
 Hopkins University, as downloaded from the CMU Delphi COVIDcast Epidata
-API. This example data is a snapshot as of March 20, 2024, and
+API. This example data is a snapshot as of May 31, 2022, and
 ranges from December 31, 2020 to December 31, 2021. It
 includes all states.
 }
diff --git a/man/covid_case_death_rates_extended.Rd b/man/covid_case_death_rates_extended.Rd
new file mode 100644
index 0000000..cea6f38
--- /dev/null
+++ b/man/covid_case_death_rates_extended.Rd
@@ -0,0 +1,55 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/epiprocess-data.R
+\docType{data}
+\name{covid_case_death_rates_extended}
+\alias{covid_case_death_rates_extended}
+\title{JHU daily COVID-19 cases and deaths rates from all states}
+\format{
+An \code{\link[epiprocess:epi_df]{epiprocess::epi_df}} (object of class \code{c("epi_df", "tbl_df", "tbl", "data.frame")}) with 37576 rows and 4 columns.
+}
+\source{
+This object contains a modified part of the
+\href{https://github.com/CSSEGISandData/COVID-19}{COVID-19 Data Repository by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University}
+as \href{https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/jhu-csse.html}{republished in the COVIDcast Epidata API}.
+This data set is licensed under the terms of the
+\href{https://creativecommons.org/licenses/by/4.0/}{Creative Commons Attribution 4.0 International license}
+by the Johns Hopkins University on behalf of its Center for Systems Science
+in Engineering. Copyright Johns Hopkins University 2020.
+
+Modifications:
+\itemize{
+\item \href{https://cmu-delphi.github.io/delphi-epidata/api/covidcast-signals/jhu-csse.html}{From the COVIDcast Epidata API}:
+These signals are taken directly from the JHU CSSE
+\href{https://github.com/CSSEGISandData/COVID-19}{COVID-19 GitHub repository}
+without changes. The 7-day average signals are computed by Delphi by
+calculating moving averages of the preceding 7 days, so the signal for
+June 7 is the average of the underlying data for June 1 through 7,
+inclusive.
+}
+}
+\usage{
+covid_case_death_rates_extended
+}
+\description{
+This data source of confirmed COVID-19 cases and deaths is based on reports
+made available by the Center for Systems Science and Engineering at Johns
+Hopkins University, as downloaded from the CMU Delphi COVIDcast Epidata
+API. This example data is a snapshot as of May 31, 2022, and
+ranges from March 1, 2020 to December 31, 2021. It
+includes all states.
+}
+\section{Data dictionary}{
+
+The data has columns:
+\describe{
+\item{geo_value}{the geographic value associated with each row
+of measurements.}
+\item{time_value}{the time value associated with each row of measurements.}
+\item{case_rate}{7-day average signal of number of new
+confirmed COVID-19 cases per 100,000 population, daily}
+\item{death_rate}{7-day average signal of number of new confirmed
+deaths due to COVID-19 per 100,000 population, daily}
+}
+}
+
+\keyword{datasets}