diff --git a/phpstan.neon b/phpstan.neon
index 2ddcb33..9bd0e74 100644
--- a/phpstan.neon
+++ b/phpstan.neon
@@ -1,5 +1,4 @@
 includes:
-    - ./vendor/phpstan/phpstan/conf/bleedingEdge.neon
     - phpstan-baseline.neon
 
 parameters:
diff --git a/src/Tags/CycleTag.php b/src/Tags/CycleTag.php
index 2a6aafc..3e024fb 100644
--- a/src/Tags/CycleTag.php
+++ b/src/Tags/CycleTag.php
@@ -72,7 +72,10 @@ public function render(RenderContext $context): string
         assert(is_array($register));
         $key = $context->evaluate($this->name);
 
-        $iteration = $register[$key] ?? 0;
+        $iteration = match (true) {
+            isset($register[$key]) && is_int($register[$key]) => $register[$key],
+            default => 0,
+        };
 
         $value = $this->variables[$iteration];
 
diff --git a/src/Tags/DecrementTag.php b/src/Tags/DecrementTag.php
index 6aba657..6fc955c 100644
--- a/src/Tags/DecrementTag.php
+++ b/src/Tags/DecrementTag.php
@@ -15,8 +15,10 @@ public static function tagName(): string
 
     public function render(RenderContext $context): string
     {
-        $counter = $context->getEnvironment($this->variableName) ?? 0;
-        $counter -= 1;
+        $counter = $context->getEnvironment($this->variableName);
+
+        $counter = is_int($counter) ? $counter - 1 : -1;
+
         $context->setEnvironment($this->variableName, $counter);
 
         return (string) $counter;
diff --git a/src/Tags/IncrementTag.php b/src/Tags/IncrementTag.php
index 9d30970..34cc914 100644
--- a/src/Tags/IncrementTag.php
+++ b/src/Tags/IncrementTag.php
@@ -32,8 +32,10 @@ public function parse(TagParseContext $context): static
 
     public function render(RenderContext $context): string
     {
-        $counter = $context->getEnvironment($this->variableName) ?? -1;
-        $counter += 1;
+        $counter = $context->getEnvironment($this->variableName);
+
+        $counter = is_int($counter) ? $counter + 1 : 0;
+
         $context->setEnvironment($this->variableName, $counter);
 
         return (string) $counter;