diff --git a/.gitignore b/.gitignore
index 6dff472..a3f7f64 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,11 @@
 /zstd-1.3.1.tar.gz
 /zstd-1.3.2.tar.gz
 /zstd-1.3.3.tar.gz
+/zstd-1.3.4.tar.gz
+/zstd-1.3.5.tar.gz
+/zstd-1.3.6.tar.gz
+/zstd-1.3.8.tar.gz
+/zstd-1.4.0.tar.gz
+/zstd-1.4.2.tar.gz
+/zstd-1.4.4.tar.gz
+/zstd-1.4.5.tar.gz
diff --git a/lib-make.patch b/lib-make.patch
new file mode 100644
index 0000000..2bbe9cf
--- /dev/null
+++ b/lib-make.patch
@@ -0,0 +1,20 @@
+diff -Naur zstd-1.4.5.orig/lib/Makefile zstd-1.4.5/lib/Makefile
+--- zstd-1.4.5.orig/lib/Makefile	2020-05-22 05:04:00.000000000 +0000
++++ zstd-1.4.5/lib/Makefile	2020-05-25 14:11:28.947300726 +0000
+@@ -220,13 +220,14 @@
+ .PHONY: lib
+ lib : libzstd.a libzstd
+ 
+-.PHONY: lib-mt
++# note : do not define lib-mt or lib-release as .PHONY
++# make does not consider implicit pattern rule for .PHONY target
++
+ %-mt : CPPFLAGS += -DZSTD_MULTITHREAD
+ %-mt : LDFLAGS  += -pthread
+ %-mt : %
+ 	@echo multi-threading build completed
+ 
+-.PHONY: lib-release
+ %-release : DEBUGFLAGS :=
+ %-release : %
+ 	@echo release build completed
diff --git a/pzstd.1.patch b/pzstd.1.patch
index 1f391b4..d6d0ee7 100644
--- a/pzstd.1.patch
+++ b/pzstd.1.patch
@@ -1,11 +1,10 @@
-diff -Naur zstd-1.2.0.orig/programs/zstd.1 zstd-1.2.0/programs/zstd.1
---- zstd-1.2.0.orig/programs/zstd.1	2017-05-04 18:18:24.000000000 +0000
-+++ zstd-1.2.0/programs/zstd.1	2017-05-08 13:26:25.639811525 +0000
-@@ -162,7 +162,14 @@
- .TP
- \fB\-\-\fR
- All arguments after \fB\-\-\fR are treated as files
--.
+diff -Naur zstd-1.4.5.orig/programs/zstd.1 zstd-1.4.5/programs/zstd.1
+--- zstd-1.4.5.orig/programs/zstd.1	2020-05-22 05:04:00.000000000 +0000
++++ zstd-1.4.5/programs/zstd.1	2020-05-22 13:01:37.443798417 +0000
+@@ -202,6 +202,14 @@
+ .
+ .IP "\(bu" 4
+ \fB\-\-\fR: All arguments after \fB\-\-\fR are treated as files
 +
 +.SH Parallel Zstd OPTIONS
 +Additional options for the pzstd utility
@@ -14,6 +13,6 @@ diff -Naur zstd-1.2.0.orig/programs/zstd.1 zstd-1.2.0/programs/zstd.1
 + number of threads to use for (de)compression (default:4)
 +
 +
- .SH "DICTIONARY BUILDER"
- \fBzstd\fR offers \fIdictionary\fR compression, useful for very small files and messages\. It\'s possible to train \fBzstd\fR with some samples, the result of which is saved into a file called a \fBdictionary\fR\. Then during compression and decompression, reference the same dictionary\. It will improve compression ratio of small files\. Typical gains range from 10% (at 64KB) to x5 better (at <1KB)\.
+ .
+ .IP "" 0
  .
diff --git a/sources b/sources
index 06624ee..0271367 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (zstd-1.3.3.tar.gz) = 72b63f96f65ca987cdc82c24354f7665c7dc3b2563cb0646f355c34bf8f090d8a0759729f8beaba8317272bdab34749f934055707b25cfd69c98a9fdcfbc59ae
+SHA512 (zstd-1.4.5.tar.gz) = 417b813ade6c8436690bd9d6da34a9f87f50e7378752b72e63066befbee496392a4b72896fa56688d814f461871ab31d3c6637497ff2ed7a282d58513631a38b
diff --git a/zstd.spec b/zstd.spec
index 97468d2..c2f5060 100644
--- a/zstd.spec
+++ b/zstd.spec
@@ -8,8 +8,8 @@
 %endif
 
 Name:           zstd
-Version:        1.3.3
-Release:        1%{?dist}
+Version:        1.4.5
+Release:        3%{?dist}
 Summary:        Zstd compression library
 
 License:        BSD and GPLv2
@@ -17,6 +17,7 @@ URL:            https://github.com/facebook/zstd
 Source0:        https://github.com/facebook/zstd/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
 
 Patch1:         pzstd.1.patch
+Patch2:         lib-make.patch
 
 BuildRequires:  gcc gtest-devel
 
@@ -34,9 +35,15 @@ Zstandard compression shared library.
 Summary:        Header files for Zstd library
 Requires:       lib%{name}%{?_isa} = %{version}-%{release}
 
+%package -n lib%{name}-static
+Summary:        Static variant of the Zstd library
+Requires:       lib%{name}-devel = %{version}-%{release}
+
 %description -n lib%{name}-devel
 Header files for Zstd library.
 
+%description -n lib%{name}-static
+Static variant of the Zstd library.
 
 %prep
 %setup -q
@@ -44,9 +51,11 @@ find -name .gitignore -delete
 %if 0%{?with_pzstd}
 %patch1 -p1
 %endif
+%patch2 -p1
 
 %build
 %{?__global_ldflags:LDFLAGS="${LDFLAGS:-%__global_ldflags}" ; export LDFLAGS ;}
+export LDFLAGS="$LDFLAGS -lrt"
 for dir in lib programs; do
   CFLAGS="%{optflags}" %make_build -C "$dir"
 done
@@ -56,6 +65,7 @@ CFLAGS="%{optflags}" CXXFLAGS="%{optflags} -std=c++11" %make_build -C 'contrib/p
 
 %check
 %{?__global_ldflags:LDFLAGS="${LDFLAGS:-%__global_ldflags}" ; export LDFLAGS ;}
+export LDFLAGS="$LDFLAGS -lrt"
 CFLAGS="%{optflags}" make -C tests test-zstd
 %if 0%{?with_pzstd}
 CFLAGS="%{optflags}" CXXFLAGS="%{optflags} -std=c++11" make -C contrib/pzstd test
@@ -63,18 +73,13 @@ CFLAGS="%{optflags}" CXXFLAGS="%{optflags} -std=c++11" make -C contrib/pzstd tes
 
 %install
 %make_install PREFIX=%{_prefix} LIBDIR=%{_libdir}
-# Remove undocumented wrappers of minimal use
-rm %{buildroot}/%{_bindir}/%{name}less
-rm %{buildroot}/%{_bindir}/%{name}grep
-# Don't install the static lib
-rm %{buildroot}/%{_libdir}/libzstd.a
 %if 0%{?with_pzstd}
 install -D -m755 contrib/pzstd/pzstd %{buildroot}/usr/bin/pzstd
 install -D -m644 programs/%{name}.1 %{buildroot}/%{_mandir}/man1/p%{name}.1
 %endif
 
 %files
-%doc NEWS README.md
+%doc CHANGELOG README.md
 %{_bindir}/%{name}
 %if 0%{?with_pzstd}
 %{_bindir}/p%{name}
@@ -83,9 +88,13 @@ install -D -m644 programs/%{name}.1 %{buildroot}/%{_mandir}/man1/p%{name}.1
 %{_bindir}/%{name}mt
 %{_bindir}/un%{name}
 %{_bindir}/%{name}cat
+%{_bindir}/%{name}grep
+%{_bindir}/%{name}less
 %{_mandir}/man1/%{name}.1*
 %{_mandir}/man1/un%{name}.1*
 %{_mandir}/man1/%{name}cat.1*
+%{_mandir}/man1/%{name}grep.1*
+%{_mandir}/man1/%{name}less.1*
 %license LICENSE
 
 %files -n lib%{name}
@@ -103,7 +112,40 @@ install -D -m644 programs/%{name}.1 %{buildroot}/%{_mandir}/man1/p%{name}.1
 %post -n lib%{name} -p /sbin/ldconfig
 %postun -n lib%{name} -p /sbin/ldconfig
 
+%files -n lib%{name}-static
+%{_libdir}/libzstd.a
+
 %changelog
+* Mon May 25 2020 Pádraig Brady <P@draigBrady.com> - 1.4.5-3
+- Build shared library with correct compiler flags
+
+* Fri May 22 2020 Pádraig Brady <P@draigBrady.com> - 1.4.5-1
+- Latest upstream
+
+* Fri May 22 2020 Avi Kivity <avi@scylladb.com> - 1.4.4-3
+- Added static library subpackage
+
+* Wed Jan 15 2020 Pádraig Brady <P@draigBrady.com> - 1.4.4-1
+- Latest upstream
+
+* Wed Jul 31 2019 Pádraig Brady <P@draigBrady.com> - 1.4.2-1
+- Latest upstream
+
+* Mon Apr 29 2019 Pádraig Brady <P@draigBrady.com> - 1.4.0-1
+- Latest upstream
+
+* Mon Dec 31 2018 Pádraig Brady <P@draigBrady.com> - 1.3.8-1
+- Latest upstream
+
+* Mon Oct 08 2018 Pádraig Brady <P@draigBrady.com> - 1.3.6-1
+- Latest upstream
+
+* Mon Jul 02 2018 Pádraig Brady <P@draigBrady.com> - 1.3.5.1
+- Latest upstream
+
+* Wed Mar 28 2018 Pádraig Brady <P@draigBrady.com> - 1.3.4-1
+- Latest upstream
+
 * Thu Dec 21 2017 Pádraig Brady <P@draigBrady.com> - 1.3.3-1
 - Latest upstream