diff --git a/pkgs/development/tools/misc/jscoverage/default.nix b/pkgs/development/tools/misc/jscoverage/default.nix
index 042d085c1e0c..217cbe5e0296 100644
--- a/pkgs/development/tools/misc/jscoverage/default.nix
+++ b/pkgs/development/tools/misc/jscoverage/default.nix
@@ -1,4 +1,4 @@
-{ autoconf, fetchurl, makedepend, perl, python, lib, stdenv, unzip, zip }:
+{ autoconf, fetchurl, makedepend, perl, python3, lib, stdenv, unzip, zip }:
 
 stdenv.mkDerivation rec {
   name = "jscoverage-0.5.1";
@@ -12,8 +12,9 @@ stdenv.mkDerivation rec {
     ./jsfalse_to_null.patch
   ];
 
-  nativeBuildInputs = [ unzip ];
-  buildInputs = [ autoconf makedepend perl python zip ];
+  nativeBuildInputs = [ unzip perl python3 zip ];
+
+  strictDeps = true;
 
   # It works without MOZ_FIX_LINK_PATHS, circumventing an impurity
   # issue.  Maybe we could kick js/ (spidermonkey) completely and