diff --git a/Cargo.lock b/Cargo.lock
index 03a8558..d8e7782 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -151,6 +151,7 @@ dependencies = [
 [[package]]
 name = "cortex-m-rt"
 version = "0.6.13"
+source = "git+https://github.com/rust-embedded/cortex-m-rt.git?rev=a2e3ad5#a2e3ad54478c6b98e519a1b0946395d790c0b6c7"
 dependencies = [
  "cortex-m-rt-macros",
 ]
@@ -158,6 +159,7 @@ dependencies = [
 [[package]]
 name = "cortex-m-rt-macros"
 version = "0.6.11"
+source = "git+https://github.com/rust-embedded/cortex-m-rt.git?rev=a2e3ad5#a2e3ad54478c6b98e519a1b0946395d790c0b6c7"
 dependencies = [
  "proc-macro2",
  "quote",
diff --git a/Cargo.toml b/Cargo.toml
index a18e595..e6559a0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -59,10 +59,8 @@ branch = "master"
 cc = "1.0"
 
 [patch.crates-io.cortex-m-rt]
-path = "../cortex-m-rt"
-# 0.6.13
-# git = "https://github.com/rust-embedded/cortex-m-rt.git"
-# rev = "8c90451"
+git = "https://github.com/rust-embedded/cortex-m-rt.git"
+rev = "a2e3ad5"
 
 [patch.crates-io.miniconf]
 git = "https://github.com/quartiq/miniconf.git"