diff --git a/Cargo.toml b/Cargo.toml
index 4ab885e..226e4d4 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -56,7 +56,7 @@ version = "0.9.0"
 
 [patch.crates-io.miniconf]
 git = "https://github.com/quartiq/miniconf.git"
-rev = "c8d819c"
+rev = "c6f2b28"
 
 [dependencies.smoltcp-nal]
 git = "https://github.com/quartiq/smoltcp-nal.git"
@@ -66,10 +66,6 @@ rev = "8468f11"
 git = "https://github.com/quartiq/minimq.git"
 rev = "b3f364d"
 
-[patch.crates-io.serde-json-core]
-git = "https://github.com/rust-embedded-community/serde-json-core.git"
-rev = "da460d1"
-
 [features]
 semihosting = ["panic-semihosting", "cortex-m-log/semihosting"]
 bkpt = [ ]