diff --git a/openvalidators/utils.py b/openvalidators/utils.py
index 0a8dc51..cc71649 100644
--- a/openvalidators/utils.py
+++ b/openvalidators/utils.py
@@ -31,7 +31,7 @@ def should_reinit_wandb(self):
 
 def init_wandb(self, reinit=False):
     """Starts a new wandb run."""
-    tags = [self.wallet.hotkey.ss58_address, openvalidators.__version__, openvalidators.__spec_version__]
+    tags = [self.wallet.hotkey.ss58_address, openvalidators.__version__, str(openvalidators.__spec_version__)]
     if self.config.mock:
         tags.append("mock")
     if self.config.neuron.use_custom_gating_model: