diff --git a/library/alloc.nim b/library/alloc.nim
index e1ba4a4..b185dd7 100644
--- a/library/alloc.nim
+++ b/library/alloc.nim
@@ -30,6 +30,14 @@ proc allocSharedSeq*[T](s: seq[T]): SharedSeq[T] =
   return (cast[ptr UncheckedArray[T]](data), s.len)
 
 proc deallocSharedSeq*[T](s: var SharedSeq[T]) =
+  if not s.data.isNil:
+    when T is cstring:
+      # For array of cstrings, deallocate each string first
+      for i in 0 ..< s.len:
+        if not s.data[i].isNil:
+          # Deallocate each cstring
+          deallocShared(s.data[i])
+
   deallocShared(s.data)
   s.len = 0
 
@@ -48,6 +56,18 @@ proc allocSharedSeqFromCArray*[T](arr: ptr T, len: int): SharedSeq[T] =
   if arr.isNil or len <= 0:
     return (nil, 0)
 
-  let data = allocShared(sizeof(T) * len)
-  copyMem(data, arr, sizeof(T) * len)
-  return (cast[ptr UncheckedArray[T]](data), len)
+  when T is cstring:
+    # Special handling for arrays of cstrings
+    let data = cast[ptr UncheckedArray[cstring]](allocShared(sizeof(cstring) * len))
+    let cstrArr = cast[ptr UncheckedArray[cstring]](arr)
+
+    for i in 0 ..< len:
+      # Use the existing alloc proc to properly allocate each cstring
+      data[i] = cstrArr[i].alloc()
+
+    return (data, len)
+  else:
+    # Original handling for non-cstring types
+    let data = allocShared(sizeof(T) * len)
+    copyMem(data, arr, sizeof(T) * len)
+    return (cast[ptr UncheckedArray[T]](data), len)
diff --git a/library/libsds.h b/library/libsds.h
index ff637d8..63a16c8 100644
--- a/library/libsds.h
+++ b/library/libsds.h
@@ -45,6 +45,13 @@ int UnwrapReceivedMessage(void* ctx,
                     SdsCallBack callback, 
                     void* userData);
 
+int MarkDependenciesMet(void* ctx, 
+                    char** messageIDs, 
+                    size_t count, 
+                    SdsCallBack callback,
+                    void* userData);
+
+
 
 #ifdef __cplusplus
 }
diff --git a/library/libsds.nim b/library/libsds.nim
index 8fea804..2491850 100644
--- a/library/libsds.nim
+++ b/library/libsds.nim
@@ -14,7 +14,7 @@ import
   ./ffi_types,
   ./sds_thread/inter_thread_communication/sds_thread_request,
   ./sds_thread/inter_thread_communication/requests/
-    [sds_lifecycle_request, sds_message_request],
+    [sds_lifecycle_request, sds_message_request, sds_dependencies_request],
   ../src/[reliability, reliability_utils, message]
 
 ################################################################################
@@ -242,5 +242,35 @@ proc UnwrapReceivedMessage(
     userData,
   )
 
+proc MarkDependenciesMet(
+    ctx: ptr SdsContext,
+    messageIds: pointer,
+    count: csize_t,
+    callback: SdsCallBack,
+    userData: pointer,
+): cint {.dynlib, exportc.} =
+  initializeLibrary()
+  checkLibsdsParams(ctx, callback, userData)
+
+  if messageIds == nil and count > 0:
+    let msg = "libsds error: " & "MessageIDs pointer is NULL but count > 0"
+    callback(RET_ERR, unsafeAddr msg[0], cast[csize_t](len(msg)), userData)
+    return RET_ERR
+
+  var messageIds = allocSharedSeqFromCArray(cast[ptr cstring](messageIds), count.int)
+
+  defer:
+    deallocSharedSeq(messageIds)
+
+  handleRequest(
+    ctx,
+    RequestType.DEPENDENCIES,
+    SdsDependenciesRequest.createShared(
+      SdsDependenciesMsgType.MARK_DEPENDENCIES_MET, messageIds, count
+    ),
+    callback,
+    userData,
+  )
+
 ### End of exported procs
 ################################################################################
diff --git a/library/sds_thread/inter_thread_communication/requests/sds_dependencies_request.nim b/library/sds_thread/inter_thread_communication/requests/sds_dependencies_request.nim
new file mode 100644
index 0000000..7c45087
--- /dev/null
+++ b/library/sds_thread/inter_thread_communication/requests/sds_dependencies_request.nim
@@ -0,0 +1,49 @@
+import std/[options, json, strutils, net, sequtils]
+import chronos, chronicles, results, confutils, confutils/std/net
+
+import ../../../alloc
+import ../../../../src/[reliability_utils, reliability, message]
+
+type SdsDependenciesMsgType* = enum
+  MARK_DEPENDENCIES_MET
+
+type SdsDependenciesRequest* = object
+  operation: SdsDependenciesMsgType
+  messageIds: SharedSeq[cstring]
+  count: csize_t
+
+proc createShared*(
+    T: type SdsDependenciesRequest,
+    op: SdsDependenciesMsgType,
+    messageIds: SharedSeq[cstring],
+    count: csize_t = 0,
+): ptr type T =
+  var ret = createShared(T)
+  ret[].operation = op
+  ret[].messageIds = messageIds # check if alloc is needed
+  ret[].count = count
+  return ret
+
+proc destroyShared(self: ptr SdsDependenciesRequest) =
+  #deallocShared(self[].message)
+  #deallocShared(self[].messageId)
+  deallocShared(self)
+
+proc process*(
+    self: ptr SdsDependenciesRequest, rm: ptr ReliabilityManager
+): Future[Result[string, string]] {.async.} =
+  defer:
+    destroyShared(self)
+
+  case self.operation
+  of MARK_DEPENDENCIES_MET:
+    let messageIdsC = self.messageIds.toSeq()
+    let messageIds = messageIdsC.mapIt($it)
+
+    markDependenciesMet(rm[], messageIds).isOkOr:
+      error "MARK_DEPENDENCIES_MET failed", error = error
+      return err("error processing MARK_DEPENDENCIES_MET request: " & $error)
+
+    return ok("")
+
+  return ok("")
diff --git a/library/sds_thread/inter_thread_communication/sds_thread_request.nim b/library/sds_thread/inter_thread_communication/sds_thread_request.nim
index 9ea8951..f40bef4 100644
--- a/library/sds_thread/inter_thread_communication/sds_thread_request.nim
+++ b/library/sds_thread/inter_thread_communication/sds_thread_request.nim
@@ -6,12 +6,13 @@ import std/json, results
 import chronos, chronos/threadsync
 import
   ../../ffi_types,
-  ./requests/[sds_lifecycle_request, sds_message_request],
+  ./requests/[sds_lifecycle_request, sds_message_request, sds_dependencies_request],
   ../../../src/[reliability_utils]
 
 type RequestType* {.pure.} = enum
   LIFECYCLE
   MESSAGE
+  DEPENDENCIES
 
 type SdsThreadRequest* = object
   reqType: RequestType
@@ -68,6 +69,8 @@ proc process*(
       cast[ptr SdsLifecycleRequest](request[].reqContent).process(rm)
     of MESSAGE:
       cast[ptr SdsMessageRequest](request[].reqContent).process(rm)
+    of DEPENDENCIES:
+      cast[ptr SdsDependenciesRequest](request[].reqContent).process(rm)
 
   handleRes(await retFut, request)