diff --git a/src/spaces/credential.rs b/src/spaces/credential.rs
--- a/src/spaces/credential.rs
+++ b/src/spaces/credential.rs
@@ -57,7 +57,7 @@ .duration_since(std::time::UNIX_EPOCH)
         .unwrap()
         .as_secs();
 
-    if now > data.claims.exp {
+    if now >= data.claims.exp {
         return Err(AppError::Auth("member grant has expired".into()));
     }
 
@@ -173,7 +173,7 @@ .duration_since(std::time::UNIX_EPOCH)
         .unwrap()
         .as_secs();
 
-    if now > claims.exp {
+    if now >= claims.exp {
         return Err(AppError::Auth("credential has expired".into()));
     }