diff --git a/.gitignore b/.gitignore
index e0aa81f..cde919f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /fs_1.2.7.tar.gz
 /fs_1.3.0.tar.gz
 /fs_1.3.1.tar.gz
+/fs_1.4.1.tar.gz
diff --git a/0001-Use-system-libuv.patch b/0001-Use-system-libuv.patch
index a641d08..974627d 100644
--- a/0001-Use-system-libuv.patch
+++ b/0001-Use-system-libuv.patch
@@ -110,8 +110,8 @@ index a4c07030..6e08a28f 100644
 +PKG_LIBS = $(shell pkgconf --libs libuv)
  
  SOURCES = $(wildcard *.cc unix/*.cc)
- OBJECTS = $(SOURCES:.cc=.o) RcppExports.o
-@@ -19,29 +19,11 @@ ifeq ($(UNAME), Linux)
+ OBJECTS = $(SOURCES:.cc=.o)
+@@ -19,24 +19,11 @@
  OBJECTS +=  bsd/setmode.o bsd/strmode.o bsd/reallocarray.o
  endif
  
@@ -122,14 +122,9 @@ index a4c07030..6e08a28f 100644
  
 -$(SHLIB): libuv/.libs/libuv.a
 -
--libuv/m4/lt~obsolete.m4: libuv/m4/lt_obsolete.m4
--	cp -p -f libuv/m4/lt_obsolete.m4 libuv/m4/lt~obsolete.m4
--
--libuv/Makefile: libuv/m4/lt~obsolete.m4
+-libuv/Makefile:
 -	(cd libuv \
--		&& touch aclocal.m4 \
--		&& touch -r aclocal.m4 configure Makefile.in \
--	&& CC="$(CC)" CFLAGS="$(CFLAGS) $(CPICFLAGS) $(C_VISIBILITY)" AR="$(AR)" RANLIB="$(RANLIB)" LDFLAGS="$(LDFLAGS)" ./configure --quiet)
+-	&& CC="$(CC)" CFLAGS="$(CFLAGS) $(CPPFLAGS) $(CPICFLAGS) $(C_VISIBILITY)" AR="$(AR)" RANLIB="$(RANLIB)" LDFLAGS="$(LDFLAGS)" ./configure --quiet)
 -
 -libuv/.libs/libuv.a: libuv/Makefile
 -	$(MAKE) --directory=libuv \
@@ -137,12 +132,11 @@ index a4c07030..6e08a28f 100644
 -
 -.PHONY: shlib-clean clean
 -
--shlib-clean: clean
+-# shlib-clean: clean
 +.PHONY: clean
  
  clean:
 -	$(MAKE) --directory=libuv distclean
  	rm -f $(OBJECTS)
--- 
+--
 2.20.1
-
diff --git a/0003-fix-cstring.patch b/0003-fix-cstring.patch
new file mode 100644
index 0000000..b35c163
--- /dev/null
+++ b/0003-fix-cstring.patch
@@ -0,0 +1,12 @@
+diff -up fs/src/file.cc.fix fs/src/file.cc
+--- fs/src/file.cc.fix	2020-06-07 10:06:16.061054314 -0400
++++ fs/src/file.cc	2020-06-07 10:06:46.228385680 -0400
+@@ -9,7 +9,7 @@
+ 
+ #undef ERROR
+ 
+-#include <string>
++#include <cstring>
+ #include <vector>
+ 
+ #include "error.h"
diff --git a/R-fs.spec b/R-fs.spec
index ee77f07..aa0223e 100644
--- a/R-fs.spec
+++ b/R-fs.spec
@@ -2,8 +2,8 @@
 %global rlibdir  %{_libdir}/R/library
 
 Name:             R-%{packname}
-Version:          1.3.1
-Release:          4%{?dist}
+Version:          1.4.1
+Release:          1%{?dist}
 Summary:          Cross-Platform File System Operations Based on 'libuv'
 
 License:          GPLv3
@@ -13,11 +13,13 @@ Source0:          https://cran.r-project.org/src/contrib/%{packname}_%{version}.
 Patch0001:        0001-Use-system-libuv.patch
 # Workaround for https://github.com/libuv/libuv/issues/2262
 Patch0002:        0002-Initialize-stat-buf-to-be-zero.patch
+# Fix issue where file.cc needs cstring.h
+Patch0003:        0003-fix-cstring.patch
 
 # Here's the R view of the dependencies world:
 # Depends:
 # Imports:   R-methods, R-Rcpp
-# Suggests:  R-testthat, R-covr, R-pillar >= 1.0.0, R-crayon, R-rmarkdown, R-knitr, R-withr, R-spelling
+# Suggests:  R-testthat, R-covr, R-pillar >= 1.0.0, R-tibble >= 1.1.0, R-crayon, R-rmarkdown, R-knitr, R-withr, R-spelling
 # LinkingTo:
 # Enhances:
 
@@ -28,6 +30,7 @@ BuildRequires:    R-methods
 BuildRequires:    R-Rcpp-devel
 BuildRequires:    R-testthat
 BuildRequires:    R-pillar >= 1.0.0
+BuildRequires:    R-tibble >= 1.1.0
 BuildRequires:    R-crayon
 BuildRequires:    R-rmarkdown
 BuildRequires:    R-knitr
@@ -50,6 +53,8 @@ sed -i -e '/libuv/d' MD5
 
 %patch0002 -p1
 
+%patch0003 -p1
+
 # Don't need coverage; it's not packaged either.
 sed -i 's/, covr//g' DESCRIPTION
 popd
@@ -88,6 +93,10 @@ export LANG=C.UTF-8
 
 
 %changelog
+* Thu Jun  4 2020 Tom Callaway <spot@fedoraproject.org> - 1.4.1-1
+- update to 1.4.1
+- rebuild for R 4
+
 * Tue Jan 28 2020 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.1-4
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_32_Mass_Rebuild
 
diff --git a/sources b/sources
index 4596814..f1148b4 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (fs_1.3.1.tar.gz) = a64bab2c15baa630990fc927a0397be6ccb10f8bc97e01b28247b92c6a19ce47b8fc3b049bb75b7ceaadf295f8ed7c8eea3d78f1391f39e813f2bb25f0edceba
+SHA512 (fs_1.4.1.tar.gz) = bb5a9459f994c5a56e0cd282e88c0ed8a049723669a18587ba42a688adc81229d84626cdc8208034808e42d19e46ce31544507473481964fef6e352c61a9b640