diff --git a/ruma-appservice-api/Cargo.toml b/ruma-appservice-api/Cargo.toml
index 1e1879ba..6c33b28d 100644
--- a/ruma-appservice-api/Cargo.toml
+++ b/ruma-appservice-api/Cargo.toml
@@ -21,3 +21,4 @@ serde_json = "1.0.57"
 
 [features]
 unstable-exhaustive-types = []
+unstable-synapse-quirks = ["ruma-events/unstable-synapse-quirks"]
diff --git a/ruma-client-api/Cargo.toml b/ruma-client-api/Cargo.toml
index f1d43e41..31f15b0a 100644
--- a/ruma-client-api/Cargo.toml
+++ b/ruma-client-api/Cargo.toml
@@ -37,4 +37,7 @@ matches = "0.1.8"
 [features]
 unstable-exhaustive-types = []
 unstable-pre-spec = []
-unstable-synapse-quirks = ["ruma-common/unstable-synapse-quirks"]
+unstable-synapse-quirks = [
+    "ruma-common/unstable-synapse-quirks",
+    "ruma-events/unstable-synapse-quirks",
+]
diff --git a/ruma-client/Cargo.toml b/ruma-client/Cargo.toml
index a5318e68..cfb03c0d 100644
--- a/ruma-client/Cargo.toml
+++ b/ruma-client/Cargo.toml
@@ -39,3 +39,4 @@ tokio = { version = "0.2.22", features = ["macros"] }
 [features]
 default = ["tls"]
 tls = ["hyper-tls"]
+unstable-synapse-quirks = ["ruma-events/unstable-synapse-quirks"]
diff --git a/ruma-events/Cargo.toml b/ruma-events/Cargo.toml
index decbdb5d..9dc13685 100644
--- a/ruma-events/Cargo.toml
+++ b/ruma-events/Cargo.toml
@@ -31,6 +31,7 @@ trybuild = "1.0.31"
 [features]
 unstable-exhaustive-types = []
 unstable-pre-spec = []
+unstable-synapse-quirks = []
 
 [[bench]]
 name = "event_deserialize"
diff --git a/ruma-federation-api/Cargo.toml b/ruma-federation-api/Cargo.toml
index 901d9299..ffd27cd8 100644
--- a/ruma-federation-api/Cargo.toml
+++ b/ruma-federation-api/Cargo.toml
@@ -31,3 +31,4 @@ matches = "0.1.8"
 [features]
 unstable-exhaustive-types = []
 unstable-pre-spec = []
+unstable-synapse-quirks = ["ruma-events/unstable-synapse-quirks"]
diff --git a/ruma-push-gateway-api/Cargo.toml b/ruma-push-gateway-api/Cargo.toml
index f4c9490c..c63b28e1 100644
--- a/ruma-push-gateway-api/Cargo.toml
+++ b/ruma-push-gateway-api/Cargo.toml
@@ -22,3 +22,4 @@ serde_json = "1.0.57"
 
 [features]
 unstable-exhaustive-types = []
+unstable-synapse-quirks = ["ruma-events/unstable-synapse-quirks"]
diff --git a/ruma/Cargo.toml b/ruma/Cargo.toml
index 6fbfd68e..e596dcdc 100644
--- a/ruma/Cargo.toml
+++ b/ruma/Cargo.toml
@@ -26,6 +26,7 @@ unstable-pre-spec = ["ruma-client-api/unstable-pre-spec", "ruma-events/unstable-
 unstable-synapse-quirks = [
   "ruma-client-api/unstable-synapse-quirks",
   "ruma-common/unstable-synapse-quirks",
+  "ruma-events/unstable-synapse-quirks",
 ]
 
 appservice-api = ["ruma-api", "ruma-appservice-api", "ruma-events"]