diff --git a/Cargo.toml b/Cargo.toml
index e889d814..d7c72e0d 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ http = "0.2.0"
 percent-encoding = { version = "2.1.0", optional = true }
 ruma-api-macros = { version = "=0.11.0", path = "ruma-api-macros", optional = true }
 ruma-identifiers = { version = "0.14.1", optional = true }
-serde = { version = "1.0.104", features = ["derive"], optional = true }
+serde = { version = "1.0.105", features = ["derive"], optional = true }
 serde_json = "1.0.48"
 serde_urlencoded = "0.6.1"
 strum = "0.18.0"
diff --git a/ruma-api-macros/Cargo.toml b/ruma-api-macros/Cargo.toml
index 8f3716db..77deb4db 100644
--- a/ruma-api-macros/Cargo.toml
+++ b/ruma-api-macros/Cargo.toml
@@ -16,9 +16,9 @@ version = "0.11.0"
 edition = "2018"
 
 [dependencies]
-proc-macro2 = "1.0.8"
-quote = "1.0.2"
-syn = { version = "1.0.14", features = ["full", "extra-traits"] }
+proc-macro2 = "1.0.9"
+quote = "1.0.3"
+syn = { version = "1.0.16", features = ["full", "extra-traits"] }
 
 [lib]
 proc-macro = true