diff --git a/NEWS.md b/NEWS.md
index dd6fcab2f..982cb769f 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -2,7 +2,7 @@
 
 #### Updates
 
-* `pipe_notify(flag = tools::SIGTERM)` will now raise the signal with a 100ms grace period to allow a process to exit normally (#212).
+* `pipe_notify(flag = tools::SIGTERM)` will now raise the signal with a 200ms grace period to allow a process to exit normally (#212).
 * `parse_url()` drops 'rawurl', 'host' and 'requri' from the output vector as these can be derived from the other parts.
 
 # nanonext 1.7.1
diff --git a/R/sync.R b/R/sync.R
index e15e4fdc3..018b764eb 100644
--- a/R/sync.R
+++ b/R/sync.R
@@ -168,7 +168,7 @@ cv_signal <- function(cv) invisible(.Call(rnng_cv_signal, cv))
 #'   If a signal from the \pkg{tools} package, e.g. `tools::SIGINT`, or an
 #'   equivalent integer value is supplied, this sets a flag and additionally
 #'   raises this signal upon the flag being set. For `tools::SIGTERM`, the
-#'   signal is raised with a 100ms grace period to allow a process to exit
+#'   signal is raised with a 200ms grace period to allow a process to exit
 #'   normally.
 #'
 #' @return Invisibly, zero on success (will otherwise error).
diff --git a/man/pipe_notify.Rd b/man/pipe_notify.Rd
index 32c2118a3..22cd517b4 100644
--- a/man/pipe_notify.Rd
+++ b/man/pipe_notify.Rd
@@ -24,7 +24,7 @@ signal, and causes any subsequent \code{\link[=wait]{wait()}} to return FALSE in
 If a signal from the \pkg{tools} package, e.g. \code{tools::SIGINT}, or an
 equivalent integer value is supplied, this sets a flag and additionally
 raises this signal upon the flag being set. For \code{tools::SIGTERM}, the
-signal is raised with a 100ms grace period to allow a process to exit
+signal is raised with a 200ms grace period to allow a process to exit
 normally.}
 }
 \value{
diff --git a/src/nanonext.h b/src/nanonext.h
index 9176a2ffc..f574e9f6d 100644
--- a/src/nanonext.h
+++ b/src/nanonext.h
@@ -124,7 +124,7 @@ extern int R_interrupts_pending;
 #define NANONEXT_CHUNK_SIZE 67108864 // must be <= INT_MAX
 #define NANONEXT_STR_SIZE 40
 #define NANONEXT_WAIT_DUR 1000
-#define NANONEXT_SLEEP_DUR 100
+#define NANONEXT_SLEEP_DUR 200
 #define NANO_ALLOC(x, sz)                                      \
   (x)->buf = calloc(sz, sizeof(unsigned char));                \
   if ((x)->buf == NULL) Rf_error("memory allocation failed");  \