diff --git a/pkgs/tools/security/clamav/default.nix b/pkgs/tools/security/clamav/default.nix
index be40a271cc92..4f9ca4fe9e9f 100644
--- a/pkgs/tools/security/clamav/default.nix
+++ b/pkgs/tools/security/clamav/default.nix
@@ -33,6 +33,10 @@ stdenv.mkDerivation rec {
 
   doCheck = true;
 
+  checkInputs = [
+    python3.pkgs.pytest
+  ];
+
   meta = with lib; {
     homepage = "https://www.clamav.net";
     description = "Antivirus engine designed for detecting Trojans, viruses, malware and other malicious threats";