diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 679f6a6c852c..8fe571976b2e 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -5228,7 +5228,9 @@ in
 
   mirrorbits = callPackage ../servers/mirrorbits { };
 
-  mitmproxy = callPackage ../tools/networking/mitmproxy { };
+  mitmproxy = callPackage ../tools/networking/mitmproxy {
+    python3Packages = python37Packages;
+  };
 
   mjpegtools = callPackage ../tools/video/mjpegtools { };