diff --git a/aedi/target/library_tier1.py b/aedi/target/library_tier1.py
index 02dc495e..0d63a53e 100644
--- a/aedi/target/library_tier1.py
+++ b/aedi/target/library_tier1.py
@@ -496,8 +496,8 @@ class ZlibNgTarget(base.CMakeStaticDependencyTarget):
 
     def prepare_source(self, state: BuildState):
         state.download_source(
-            'https://github.com/zlib-ng/zlib-ng/archive/refs/tags/2.1.3.tar.gz',
-            'd20e55f89d71991c59f1c5ad1ef944815e5850526c0d9cd8e504eaed5b24491a')
+            'https://github.com/zlib-ng/zlib-ng/archive/refs/tags/2.1.4.tar.gz',
+            'a0293475e6a44a3f6c045229fe50f69dc0eebc62a42405a51f19d46a5541e77a')
 
     def detect(self, state: BuildState) -> bool:
         return state.has_source_file('zlib-ng.h')