diff --git a/src/validation.cpp b/src/validation.cpp
index 87fbdad52b0..dedc6fc8da3 100644
--- a/src/validation.cpp
+++ b/src/validation.cpp
@@ -5272,6 +5272,7 @@ bool ProcessNewBlock(const CChainParams& chainparams, const std::shared_ptr<cons
         ProcessAuthsIfTipChanged(oldTip, tip, chainparams.GetConsensus());
 
         if (tip->nHeight >= chainparams.GetConsensus().DakotaHeight) {
+            LOCK(cs_main);
             panchors->CheckPendingAnchors();
         }
     }