diff --git a/var/spack/repos/builtin/packages/stc/package.py b/var/spack/repos/builtin/packages/stc/package.py
index 7a55b73873eee1b9438e5ed4d0e611c0edca1fd9..607c34451b902c13de4e97da5959aba7ede16c8a 100644
--- a/var/spack/repos/builtin/packages/stc/package.py
+++ b/var/spack/repos/builtin/packages/stc/package.py
@@ -37,6 +37,7 @@ class Stc(AutotoolsPackage):
     depends_on('java')
     depends_on('ant')
     depends_on('turbine')
+    depends_on('zsh', type='run')
 
     def configure_args(self):
         args = ['--with-turbine=' + self.spec['turbine'].prefix]
diff --git a/var/spack/repos/builtin/packages/turbine/package.py b/var/spack/repos/builtin/packages/turbine/package.py
index d12fa0a41cf2c7a2b1b5598408ab0be3460f666e..c7583cc40a2bc4a518717ec2f3461d71451475b1 100644
--- a/var/spack/repos/builtin/packages/turbine/package.py
+++ b/var/spack/repos/builtin/packages/turbine/package.py
@@ -36,7 +36,8 @@ class Turbine(AutotoolsPackage):
 
     depends_on('adlbx')
     depends_on('tcl')
-    depends_on('zsh', type='run')
+    depends_on('zsh')
+    depends_on('swig')
 
     def configure_args(self):
         args = ['--with-c-utils=' + self.spec['exmcutils'].prefix,