diff --git a/tests/simple-client.sh b/tests/simple-client.sh
index 8feb1f4..ca925b1 100755
--- a/tests/simple-client.sh
+++ b/tests/simple-client.sh
@@ -2,7 +2,7 @@
 
 hsTmpDir=$1
 
-stack ghc --                   \
+ghc                            \
     --make                     \
     -threaded                  \
     -odir $hsTmpDir            \
@@ -11,3 +11,7 @@ stack ghc --                   \
     $hsTmpDir/Simple.hs        \
     tests/TestClient.hs        \
     > /dev/null
+
+. @makeWrapper@/nix-support/setup-hook
+
+flagsBefore="" wrapProgram "${hsTmpDir}/simple-client" --prefix DYLD_LIBRARY_PATH : @grpc@/lib
diff --git a/tests/simple-server.sh b/tests/simple-server.sh
index 37a0a63..eb37776 100755
--- a/tests/simple-server.sh
+++ b/tests/simple-server.sh
@@ -2,7 +2,7 @@
 
 hsTmpDir=$1
 
-stack ghc --                   \
+ghc                            \
     --make                     \
     -threaded                  \
     -odir $hsTmpDir            \
@@ -11,3 +11,7 @@ stack ghc --                   \
     $hsTmpDir/Simple.hs        \
     tests/TestServer.hs        \
     > /dev/null
+
+. @makeWrapper@/nix-support/setup-hook
+
+flagsBefore="" wrapProgram "${hsTmpDir}/simple-server" --prefix DYLD_LIBRARY_PATH : @grpc@/lib