diff --git a/DESCRIPTION b/DESCRIPTION
index 251b118..958fd9d 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,5 +1,5 @@
 Package: parallelly
-Version: 1.37.1-9000
+Version: 1.37.1-9001
 Title: Enhancing the 'parallel' Package
 Imports:
     parallel,
diff --git a/NEWS.md b/NEWS.md
index 6ddc9b8..7d42f75 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,6 +1,9 @@
 # Version (development version)
 
- * ...
+## Bug Fixes
+
+ * Environment variable `R_PARALLELLY_MAXWORKERS_LOCALHOST` was
+   interpreted as integers rather than doubles.
 
 
 # Version 1.37.1 [2024-02-29]
diff --git a/R/options.R b/R/options.R
index ee11350..203c669 100644
--- a/R/options.R
+++ b/R/options.R
@@ -113,10 +113,10 @@
 #' All of the above \R `parallelly.*` options can be set by
 #' corresponding environment variables \env{R_PARALLELLY_*} _when the
 #' \pkg{parallelly} package is loaded_.
-#' For example, if `R_PARALLELLY_MAKENODEPSOCK_SETUP_STRATEGY = "sequential"`,
+#' For example, if `R_PARALLELLY_MAKENODEPSOCK_SETUP_STRATEGY="sequential"`,
 #' then option `parallelly.makeNodePSOCK.setup_strategy` is set to
 #' `"sequential"` (character).
-#' Similarly, if `R_PARALLELLY_AVAILABLECORES_FALLBACK = "1"`, then option
+#' Similarly, if `R_PARALLELLY_AVAILABLECORES_FALLBACK="1"`, then option
 #' `parallelly.availableCores.fallback` is set to `1` (integer).
 #'
 #'
@@ -140,6 +140,7 @@
 #' parallelly.availableWorkers.methods
 #' parallelly.availableWorkers.custom
 #' parallelly.fork.enable
+#' parallelly.maxWorkers.localhost
 #' parallelly.supportsMulticore.disableOn
 #' parallelly.supportsMulticore.unstable
 #' R_PARALLELLY_AVAILABLECORES_FALLBACK
@@ -310,7 +311,7 @@ update_package_options <- function(debug = FALSE) {
 
   update_package_option("availableWorkers.methods", mode = "character", split = ",", debug = debug)
 
-  update_package_option("maxWorkers.localhost", mode = "integer", split = ",", debug = debug)
+  update_package_option("maxWorkers.localhost", mode = "double", split = ",", debug = debug)
   update_package_option("maxWorkers.localhost.ignore", mode = "character", split = ",", debug = debug)
 
   update_package_option("fork.enable", mode = "logical", debug = debug)
diff --git a/man/parallelly.options.Rd b/man/parallelly.options.Rd
index 0e05c57..924d51d 100644
--- a/man/parallelly.options.Rd
+++ b/man/parallelly.options.Rd
@@ -173,10 +173,10 @@ The below \R options and environment variables control the default results of \c
 All of the above \R \verb{parallelly.*} options can be set by
 corresponding environment variables \env{R_PARALLELLY_*} \emph{when the
 \pkg{parallelly} package is loaded}.
-For example, if \code{R_PARALLELLY_MAKENODEPSOCK_SETUP_STRATEGY = "sequential"},
+For example, if \code{R_PARALLELLY_MAKENODEPSOCK_SETUP_STRATEGY="sequential"},
 then option \code{parallelly.makeNodePSOCK.setup_strategy} is set to
 \code{"sequential"} (character).
-Similarly, if \code{R_PARALLELLY_AVAILABLECORES_FALLBACK = "1"}, then option
+Similarly, if \code{R_PARALLELLY_AVAILABLECORES_FALLBACK="1"}, then option
 \code{parallelly.availableCores.fallback} is set to \code{1} (integer).
 }