diff --git a/Cargo.toml b/Cargo.toml
index baf987f..c02b89b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -15,7 +15,7 @@ repository = "https://github.com/chrysn/efm32gg-hal"
 # documentation = "https://docs.rs/efm32gg-hal" # only to be advertised when actually useful
 
 [dependencies]
-cortex-m = "0.5.2"
+cortex-m = "0.7.0"
 
 # version is a wild guess. dependency on unproven features should only be
 # present if own unproven feature is active (but how do i do that?).