diff --git a/manifests/db.pp b/manifests/db.pp
index df5d4d2..94a646c 100644
--- a/manifests/db.pp
+++ b/manifests/db.pp
@@ -109,10 +109,6 @@
 #
 # DEPRECATED PARAMETERS
 #
-# [*idle_timeout*]
-#   (Optional) Timeout before idle SQL connections are reaped.
-#   Defaults to undef
-#
 # [*min_pool_size*]
 #   (Optional) Minimum number of SQL connections to keep open in a pool.
 #   Defaults to undef
@@ -146,7 +142,6 @@ define oslo::db(
   $db_max_retries          = $::os_service_default,
   $mysql_enable_ndb        = $::os_service_default,
   # DEPRCATED PARAMETERS
-  $idle_timeout            = undef,
   $min_pool_size           = undef,
   $use_tpool               = undef,
 ) {
@@ -194,10 +189,6 @@ define oslo::db(
     }
   }
 
-  if $idle_timeout != undef {
-    warning('The idle_timeout parameter is deprecated. Please use connection_recycle_time instead.')
-  }
-
   if $min_pool_size {
     warning('The min_pool_size parameter is deprecated, and will be removed in a future release.')
   }
diff --git a/releasenotes/notes/remove-db-idel_timeout-ce2e23c94ddc58ea.yaml b/releasenotes/notes/remove-db-idel_timeout-ce2e23c94ddc58ea.yaml
new file mode 100644
index 0000000..2c6bacf
--- /dev/null
+++ b/releasenotes/notes/remove-db-idel_timeout-ce2e23c94ddc58ea.yaml
@@ -0,0 +1,4 @@
+---
+upgrade:
+  - |
+    The ``oslo::db::idel_timeout`` parameter has been removed.