diff --git a/ChangeLog b/ChangeLog
index 39fa567..4236eb8 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,6 @@
+Version 0.26.2 (2024-05-01)
+   * Return NULL and issue a warning when unserializing a PROMSXP (see https://github.com/traversc/qs/issues/93)
+
 Version 0.26.2 (2024-03-18)
    * Change check for requiring `-latomic` flag to use `AC_COMPILE_IFELSE` (https://github.com/traversc/qs/issues/88, https://github.com/traversc/qs/issues/91, https://github.com/traversc/qs/issues/76)
 
diff --git a/DESCRIPTION b/DESCRIPTION
index 4593695..7a205cd 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -1,7 +1,7 @@
 Package: qs
 Type: Package
 Title: Quick Serialization of R Objects
-Version: 0.26.2
+Version: 0.26.3
 Date: 2024-05-01
 Authors@R: c(
     person("Travers", "Ching", email = "traversc@gmail.com", role = c("aut", "cre", "cph")),
diff --git a/src/qs_deserialize_common.h b/src/qs_deserialize_common.h
index e51ab82..7ed2216 100644
--- a/src/qs_deserialize_common.h
+++ b/src/qs_deserialize_common.h
@@ -646,7 +646,12 @@ SEXP processBlock(T * const sobj) {
     SET_S4_OBJECT(obj);
     // SET_OBJECT(obj, 1); // this flag seems kind of pointless
   }
-  return obj;
+  if(TYPEOF(obj) == PROMSXP) {
+    Rcpp::warning("PROMSXP detected, replacing with NULL (see https://github.com/traversc/qs/issues/93)");
+    return R_NilValue;
+  } else {
+    return obj;
+  }
 }