diff --git a/Makefile b/Makefile
index 3ba1d0f5..5935b63e 100644
--- a/Makefile
+++ b/Makefile
@@ -353,7 +353,10 @@ test-install:
 		&& build/testexec \
 		&& jpm --verbose quickbin testexec.janet build/testexec2 \
 		&& build/testexec2 \
-		&& jpm --verbose --modpath=. install https://github.com/janet-lang/json.git
+		&& jpm --verbose --testdeps --modpath=. install https://github.com/janet-lang/json.git
+	cd test/install && jpm --verbose --test --modpath=. install https://github.com/janet-lang/jhydro.git
+	cd test/install && jpm --verbose --test --modpath=. install https://github.com/janet-lang/path.git
+	cd test/install && jpm --verbose --test --modpath=. install https://github.com/janet-lang/argparse.git
 
 build/embed_janet.o: build/janet.c $(JANET_HEADERS)
 	$(CC) $(CFLAGS) -c $< -o $@
diff --git a/auxbin/jpm b/auxbin/jpm
index c6caa058..22483195 100755
--- a/auxbin/jpm
+++ b/auxbin/jpm
@@ -775,6 +775,8 @@ int main(int argc, const char **argv) {
          (os/mkdir manifests)
          (spit manifest (string (string/join installed-files "\n") "\n")))
   (phony "install" ["uninstall" "build" "manifest"]
+         (when (dyn :test)
+           (do-rule "test"))
          (print "Installed as '" (meta :name) "'."))
 
   (phony "install-deps" []
@@ -857,6 +859,7 @@ Keys are:
 
 Flags are:
   --verbose : Print shell commands as they are executed.
+  --test : If passed to jpm install, runs tests before installing. Will run tests recursively on dependencies.
     `))
 
 (defn- show-help
diff --git a/build_win.bat b/build_win.bat
index ea97039e..163ce858 100644
--- a/build_win.bat
+++ b/build_win.bat
@@ -183,6 +183,12 @@ call jpm --verbose quickbin testexec.janet build\testexec2.exe
 @if errorlevel 1 goto :TESTFAIL
 call build\testexec2.exe
 @if errorlevel 1 goto :TESTFAIL
+call jpm --verbose --test --modpath=. install https://github.com/janet-lang/jhydro.git
+@if errorlevel 1 goto :TESTFAIL
+call jpm --verbose --test --modpath=. install https://github.com/janet-lang/path.git
+@if errorlevel 1 goto :TESTFAIL
+call jpm --verbose --test --modpath=. install https://github.com/janet-lang/argparse.git
+@if errorlevel 1 goto :TESTFAIL
 popd
 exit /b 0
 
diff --git a/jpm.1 b/jpm.1
index 68c116b0..809875a3 100644
--- a/jpm.1
+++ b/jpm.1
@@ -28,6 +28,10 @@ More interesting are the local commands. For more information on jpm usage, see
 .BR \-\-verbose
 Print detailed messages of what jpm is doing, including compilation commands and other shell commands.
 
+.TP
+.BR \-\-test
+If passed to jpm install, runs tests before installing. Will run tests recursively on dependencies.
+
 .SH OPTIONS
 
 .TP
diff --git a/test/install/.gitignore b/test/install/.gitignore
index 8ffb5abc..c230d0a4 100644
--- a/test/install/.gitignore
+++ b/test/install/.gitignore
@@ -1,4 +1,9 @@
 /build
 .cache
-.manifest
+.manifests
 json.*
+jhydro.*
+circlet.*
+argparse.*
+sqlite3.*
+path.*