diff --git a/Pipfile.lock b/Pipfile.lock
index 8a94d09ec3..901bb9f462 100644
--- a/Pipfile.lock
+++ b/Pipfile.lock
@@ -262,6 +262,7 @@
         },
         "hypothesis": {
             "hashes": [
+                "sha256:6847df3ffb4aa52798621dd007e6b61dbcf2d76c30ba37dc2699720e2c734b7a",
                 "sha256:acd47600deb55e9c2c98de6deef23384160ed0fdaafb6753146e556c077d3c78"
             ],
             "index": "pypi",
@@ -394,9 +395,10 @@
         },
         "mypy-extensions": {
             "hashes": [
-                "sha256:a161e3b917053de87dbe469987e173e49fb454eca10ef28b48b384538cc11458"
+                "sha256:090fedd75945a69ae91ce1303b5824f428daf5a028d2f6ab8a299250a846f15d",
+                "sha256:2d82818f5bb3e369420cb3c4060a7970edba416647068eb4c5343488a6c604a8"
             ],
-            "version": "==0.4.2"
+            "version": "==0.4.3"
         },
         "packaging": {
             "hashes": [
diff --git a/shell.nix b/shell.nix
index 7119c3f7f7..3f617e51f5 100644
--- a/shell.nix
+++ b/shell.nix
@@ -11,8 +11,9 @@ stdenv.mkDerivation {
     gcc
     gnumake
     graphviz
+    libjpeg
+    libressl
     libusb1
-    openssl
     pipenv
     pkgconfig
     protobuf3_6
@@ -34,7 +35,7 @@ stdenv.mkDerivation {
     darwin.libobjc
     libiconv
   ];
-  LD_LIBRARY_PATH="${libusb1}/lib";
+  LD_LIBRARY_PATH="${libjpeg.out}/lib:${libusb1}/lib:${libressl.out}/lib";
   shellHook = ''
     pipenv shell
     exit