diff --git a/pkgs/applications/version-management/subversion/default.nix b/pkgs/applications/version-management/subversion/default.nix
index b47618c7e42c..ac5a3e8216ce 100644
--- a/pkgs/applications/version-management/subversion/default.nix
+++ b/pkgs/applications/version-management/subversion/default.nix
@@ -43,12 +43,12 @@ let
       sha256,
       extraPatches ? [ ],
     }:
-    stdenv.mkDerivation rec {
+    stdenv.mkDerivation (finalAttrs: {
       inherit version;
       pname = "subversion${lib.optionalString (!bdbSupport && perlBindings && pythonBindings) "-client"}";
 
       src = fetchurl {
-        url = "mirror://apache/subversion/subversion-${version}.tar.bz2";
+        url = "mirror://apache/subversion/subversion-${finalAttrs.version}.tar.bz2";
         inherit sha256;
       };
 
@@ -63,7 +63,8 @@ let
         autoconf
         libtool
         python3
-      ];
+      ]
+      ++ lib.optional perlBindings perl; # Needed for swig / EXTERN.h
 
       buildInputs = [
         zlib
@@ -82,6 +83,8 @@ let
       ++ lib.optional perlBindings perl
       ++ lib.optional saslSupport sasl;
 
+      strictDeps = true;
+
       patches = [
         ./apr-1.patch
 
@@ -186,7 +189,7 @@ let
         maintainers = [ ];
         platforms = lib.platforms.linux ++ lib.platforms.darwin;
       };
-    };
+    });
 
 in
 {