diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d6a8564..5caff3a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -55,7 +55,7 @@ jobs:
     strategy:
       matrix:
         # keep MSRV in sync in ci.yaml and Cargo.toml
-        toolchain: [stable, '1.75.0']
+        toolchain: [stable]
         features: ['']
         continue-on-error: [false]
         include:
diff --git a/Cargo.toml b/Cargo.toml
index 2a29bbf..e7ed4e1 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -14,8 +14,6 @@ keywords = ["ethernet", "stm32h7", "adc", "dac", "physics"]
 repository = "https://github.com/quartiq/thermostat-eem"
 readme = "README.md"
 exclude = [".gitignore"]
-# keep MSRV in sync in ci.yaml and Cargo.toml
-rust-version = "1.75.0"
 
 [features]
 default = ["all_differential"]