diff --git a/Cargo.deps.online b/Cargo.deps.online
index df73d805..f1973045 100644
--- a/Cargo.deps.online
+++ b/Cargo.deps.online
@@ -1,4 +1,8 @@
 # Dependencies which are only used with online, crates.io builds.
 [patch.crates-io]
 # Dependency was yanked, but gio 0.7 needs it.
-fragile = { git = "https://source.puri.sm/dorota.czaplejewicz/fragile.git", tag = "0.3.0" }
\ No newline at end of file
+fragile = { git = "https://source.puri.sm/dorota.czaplejewicz/fragile.git", tag = "0.3.0" }
+
+# Override automatic upgrade done in serde_yaml.
+[dependencies.indexmap]
+version = "1.8.*"