diff --git a/.gitignore b/.gitignore
index e5a42a1..ddbfa0e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,3 +3,4 @@
 /later_0.7.3.tar.gz
 /later_0.7.4.tar.gz
 /later_0.7.5.tar.gz
+/later_0.8.0.tar.gz
diff --git a/R-later.spec b/R-later.spec
index d2f21cb..a285797 100644
--- a/R-later.spec
+++ b/R-later.spec
@@ -5,13 +5,15 @@
 %global with_doc 1
 
 Name:             R-%{packname}
-Version:          0.7.5
-Release:          2%{?dist}
+Version:          0.8.0
+Release:          1%{?dist}
 Summary:          Utilities for Delaying Function Execution
 
 License:          GPLv2+
 URL:              https://CRAN.R-project.org/package=%{packname}
 Source0:          https://cran.r-project.org/src/contrib/%{packname}_%{version}.tar.gz
+# Remove bundled tinycthread and use C11 threads directly.
+Source1:          tinycthread-threads-wrapper.h
 
 # Here's the R view of the dependencies world:
 # Depends:
@@ -49,9 +51,10 @@ Development files for %{name}.
 %prep
 %setup -q -c -n %{packname}
 
-# Ensure we don't accidentally use this bundled code.
-rm -r %{packname}/src/tinycthread
-sed -i -e '/tinycthread/d' %{packname}/MD5
+# Ensure we don't use this bundled code.
+rm %{packname}/src/{badthreads.h,tinycthread.c}
+cp %SOURCE1 %{packname}/src/tinycthread.h
+sed -i -e '/badthread/d' -e '/tinycthread/d' %{packname}/MD5
 
 
 %build
@@ -94,6 +97,9 @@ _R_CHECK_FORCE_SUGGESTS_=0 %{_bindir}/R CMD check %{packname} --ignore-vignettes
 
 
 %changelog
+* Mon Feb 11 2019 Elliott Sales de Andrade <quantum.analyst@gmail.com> - 0.8.0-1
+- Update to latest version
+
 * Thu Jan 31 2019 Fedora Release Engineering <releng@fedoraproject.org> - 0.7.5-2
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_30_Mass_Rebuild
 
diff --git a/sources b/sources
index f37d5ef..193dbc8 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (later_0.7.5.tar.gz) = bc77ea45612a4889b48ebf1488bd8343fde926b4e1aedceaa6f0d5dd11bbbb9cfa5f446901b1dd2a2833d0ec55a5d6348b2d999331e5ad42f1c6076077e40c1e
+SHA512 (later_0.8.0.tar.gz) = 4a5080cca1f51de5e2cd90a11946613a795acbad6d8bd694e8a658d80305f0f9a53214a4d7b4542a9d92a5389fb0249ebccecd6d84a17116f71a48f049aa99e2
diff --git a/tinycthread-threads-wrapper.h b/tinycthread-threads-wrapper.h
new file mode 100644
index 0000000..63fcf23
--- /dev/null
+++ b/tinycthread-threads-wrapper.h
@@ -0,0 +1,57 @@
+#ifndef TINYCTHREAD_THREAD_H
+#define TINYCTHREAD_THREAD_H
+
+#include <threads.h>
+
+/* Threads */
+#define tct_thrd_t thrd_t
+#define tct_thrd_create thrd_create
+#define tct_thrd_equal thrd_equal
+#define tct_thrd_current thrd_current
+#define tct_thrd_sleep thrd_sleep
+#define tct_thrd_yield thrd_yield
+#define tct_thrd_exit thrd_exit
+#define tct_thrd_detach thrd_detach
+#define tct_thrd_join thrd_join
+#define tct_thrd_success thrd_success
+#define tct_thrd_timedout thrd_timedout
+#define tct_thrd_busy thrd_busy
+#define tct_thrd_nomem thrd_nomem
+#define tct_thrd_error thrd_error
+#define tct_thrd_start_t thrd_start_t
+
+/* Mutual exclusion */
+#define tct_mtx_t mtx_t
+#define tct_mtx_init mtx_init
+#define tct_mtx_lock mtx_lock
+#define tct_mtx_timedlock mtx_timedlock
+#define tct_mtx_trylock mtx_trylock
+#define tct_mtx_unlock mtx_unlock
+#define tct_mtx_destroy mtx_destroy
+#define tct_mtx_plain mtx_plain
+#define tct_mtx_recursive mtx_recursive
+#define tct_mtx_timed mtx_timed
+
+/* Call once */
+#define tct_call_once call_once
+
+/* Condition variables */
+#define tct_cnd_t cnd_t
+#define tct_cnd_init cnd_init
+#define tct_cnd_signal cnd_signal
+#define tct_cnd_broadcast cnd_broadcast
+#define tct_cnd_wait cnd_wait
+#define tct_cnd_timedwait cnd_timedwait
+#define tct_cnd_destroy cnd_destroy
+
+/* Thread-local storage */
+#define tct_thread_local thread_local
+#define tct_tss_t tss_t
+#define TCT_TSS_DTOR_ITERATIONS TSS_DTOR_ITERATIONS
+#define tct_tss_dtor_t tss_dtor_t
+#define tct_tss_create tss_create
+#define tct_tss_get tss_get
+#define tct_tss_set tss_set
+#define tct_tss_delete tss_delete
+
+#endif /* TINYCTHREAD_THREAD_H */