diff --git a/src/CampaignInfo.sol b/src/CampaignInfo.sol
index cd650eb..5cb8b82 100644
--- a/src/CampaignInfo.sol
+++ b/src/CampaignInfo.sol
@@ -631,6 +631,7 @@ contract CampaignInfo is
         onlyOwner
         currentTimeIsLess(getLaunchTime())
     {
+        _validateJsonString(newImageURI);
         s_imageURI = newImageURI;
         emit ImageURIUpdated(newImageURI);
     }
diff --git a/src/utils/PledgeNFT.sol b/src/utils/PledgeNFT.sol
index 7d85480..5ba2aa3 100644
--- a/src/utils/PledgeNFT.sol
+++ b/src/utils/PledgeNFT.sol
@@ -91,6 +91,7 @@ abstract contract PledgeNFT is ERC721Burnable, AccessControl {
         string calldata _contractURI
     ) internal {
         _validateJsonString(_nftName);
+        _validateJsonString(_imageURI);
         s_nftName = _nftName;
         s_nftSymbol = _nftSymbol;
         s_imageURI = _imageURI;