diff --git a/.changeset/fix-form-select-input-group-shadow.md b/.changeset/fix-form-select-input-group-shadow.md
new file mode 100644
index 000000000..14d0f2197
--- /dev/null
+++ b/.changeset/fix-form-select-input-group-shadow.md
@@ -0,0 +1,5 @@
+---
+"@tabler/core": patch
+---
+
+Fixed `.form-select` keeping its default box-shadow inside `.input-group` by adding it to the existing `.form-control`/`.btn` box-shadow reset.
diff --git a/core/scss/ui/_forms.scss b/core/scss/ui/_forms.scss
index 2abc5506a..6fd84fd91 100644
--- a/core/scss/ui/_forms.scss
+++ b/core/scss/ui/_forms.scss
@@ -171,6 +171,7 @@ Input group
   @include border-radius($input-border-radius);
 
   .form-control,
+  .form-select,
   .btn {
     box-shadow: none;
   }