diff --git a/plugin/builtin/imagetagtransformer/ImageTagTransformer.go b/plugin/builtin/imagetagtransformer/ImageTagTransformer.go
index 2b1b347b6..0ed721192 100644
--- a/plugin/builtin/imagetagtransformer/ImageTagTransformer.go
+++ b/plugin/builtin/imagetagtransformer/ImageTagTransformer.go
@@ -148,8 +148,10 @@ func (p *plugin) findContainers(obj map[string]interface{}) error {
 }
 
 func isImageMatched(s, t string) bool {
-	// Tag values are limited to [a-zA-Z0-9_.-].
-	pattern, _ := regexp.Compile("^" + t + "(@sha256)?(:[a-zA-Z0-9_.-]*)?$")
+	// Tag values are limited to [a-zA-Z0-9_.{}-].
+	// Some tools like Bazel rules_k8s allow tag patterns with {} characters.
+	// More info: https://github.com/bazelbuild/rules_k8s/pull/423
+	pattern, _ := regexp.Compile("^" + t + "(@sha256)?(:[a-zA-Z0-9_.{}-]*)?$")
 	return pattern.MatchString(s)
 }