diff --git a/.gitignore b/.gitignore
index 87d20f6..8da0437 100644
--- a/.gitignore
+++ b/.gitignore
@@ -195,3 +195,4 @@
 /rust-1.33.0-s390x-unknown-linux-gnu.tar.xz
 /rust-1.33.0-x86_64-unknown-linux-gnu.tar.xz
 /rustc-1.34.1-src.tar.xz
+/rustc-1.34.2-src.tar.xz
diff --git a/rust.spec b/rust.spec
index 3208883..ffaace2 100644
--- a/rust.spec
+++ b/rust.spec
@@ -53,7 +53,7 @@
 %endif
 
 Name:           rust
-Version:        1.34.1
+Version:        1.34.2
 Release:        1%{?dist}
 Summary:        The Rust Programming Language
 License:        (ASL 2.0 or MIT) and (BSD and MIT)
@@ -481,6 +481,7 @@ export LIBSSH2_SYS_USE_PKG_CONFIG=1
   --enable-extended \
   --enable-vendor \
   --enable-verbose-tests \
+  --set rust.codegen-units-std=1 \
   --release-channel=%{channel}
 
 %{python} ./x.py build
@@ -675,6 +676,9 @@ rm -f %{buildroot}%{rustlibdir}/etc/lldb_*.py*
 
 
 %changelog
+* Tue May 14 2019 Josh Stone <jistone@redhat.com> - 1.34.2-1
+- Update to 1.34.2 -- fixes CVE-2019-12083.
+
 * Thu Apr 25 2019 Josh Stone <jistone@redhat.com> - 1.34.1-1
 - Update to 1.34.1.
 - Add a ThinLTO fix for rhbz1701339.
diff --git a/sources b/sources
index ace308b..725401e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (rustc-1.34.1-src.tar.xz) = c9ee59a98e0300c16a9044424fbaad0e1d5f026279b9cb238ab5bfe02c6b111780ec5f9884c4cac67d5ee91833e301bc23bd457026982587982b2fb80a528dca
+SHA512 (rustc-1.34.2-src.tar.xz) = f1bd2b226d90aae8a4657e6117b9a8451d4ce8129f79cc0fce0da7613a3b7800e690bc0ede8fec20a2f5f32c13fa8e22ac97d3838e0d36936793535a75d9c381
diff --git a/sources-bootstrap b/sources-bootstrap
index 868ba06..9ab6ad3 100644
--- a/sources-bootstrap
+++ b/sources-bootstrap
@@ -1,4 +1,4 @@
-SHA512 (rustc-1.34.1-src.tar.xz) = c9ee59a98e0300c16a9044424fbaad0e1d5f026279b9cb238ab5bfe02c6b111780ec5f9884c4cac67d5ee91833e301bc23bd457026982587982b2fb80a528dca
+SHA512 (rustc-1.34.2-src.tar.xz) = f1bd2b226d90aae8a4657e6117b9a8451d4ce8129f79cc0fce0da7613a3b7800e690bc0ede8fec20a2f5f32c13fa8e22ac97d3838e0d36936793535a75d9c381
 SHA512 (rust-1.33.0-aarch64-unknown-linux-gnu.tar.xz) = 51f6ca909411fd3b3c05baedc38be8a29923966e7cd6960a10152886687132d4ef9750140c5121b9486d6f6ee1ed7ff35f8105c9f0731fe98ce750d0ea9c528f
 SHA512 (rust-1.33.0-armv7-unknown-linux-gnueabihf.tar.xz) = 25a16c576d826115fdac5a55b89bf3372dfb39c563f2ce7d39b0a7a3c9bdc43eaf10974dfa42e26c5aa04aee169ced3e797fa46fa82bd9f4ceddeddaf6687659
 SHA512 (rust-1.33.0-i686-unknown-linux-gnu.tar.xz) = f61f97c529232fd6d7587bbf34c41dd9cc334272b1d523464d7b964aba5a102edaff8d387445e3fdb2b9587c1cdd870e97b9572c9421e79ee047479443f1896d