diff --git a/cve_bin_tool/checkers/zlib.py b/cve_bin_tool/checkers/zlib.py
index 00e442b526..4253912c95 100644
--- a/cve_bin_tool/checkers/zlib.py
+++ b/cve_bin_tool/checkers/zlib.py
@@ -26,9 +26,8 @@ class ZlibChecker(Checker):
     ]
     FILENAME_PATTERNS = [r"libz.so."]
     VERSION_PATTERNS = [
-        r"deflate ([01]+\.[0-9]+(?:\.[0-9]+)?) ",
-        r"inflate ([01]+\.[0-9]+(?:\.[0-9]+)?) ",
-        r"libz.so.([01]+\.[0-9]+(?:\.[0-9]+)?)",  # patterns like this aren't ideal
+        r"(?:de|in)flate ([01]+(\.[0-9]+){1,3}) Copyright 1995-",
+        r"libz.so.([01]+(\.[0-9]+){1,3})",  # patterns like this aren't ideal
     ]
     VENDOR_PRODUCT = [("gnu", "zlib"), ("zlib", "zlib")]
 
diff --git a/test/test_data/varnish.py b/test/test_data/varnish.py
index 6ebb1f75e4..ca057a6fda 100644
--- a/test/test_data/varnish.py
+++ b/test/test_data/varnish.py
@@ -27,5 +27,6 @@
         "package_name": "varnish-7.7.3-r0.apk",
         "product": "varnish_cache",
         "version": "7.7.3",
+        "other_products": ["zlib"],
     },
 ]
diff --git a/test/test_data/zlib.py b/test/test_data/zlib.py
index 10756a1969..bfb379cfd3 100644
--- a/test/test_data/zlib.py
+++ b/test/test_data/zlib.py
@@ -21,6 +21,13 @@
             "deflate 1.2.11 Copyright 1995-2017 Jean-loup Gailly and Mark Adler"
         ],
     },
+    {
+        "product": "zlib",
+        "version": "1.3.0.1",
+        "version_strings": [
+            " deflate 1.3.0.1 Copyright 1995-2023 Jean-loup Gailly and Mark Adler"
+        ],
+    },
 ]
 package_test_data = [
     {