diff --git a/src/appleseed/renderer/kernel/rendering/baserenderer.cpp b/src/appleseed/renderer/kernel/rendering/baserenderer.cpp
index 909d2f4a49..ba3d212d28 100644
--- a/src/appleseed/renderer/kernel/rendering/baserenderer.cpp
+++ b/src/appleseed/renderer/kernel/rendering/baserenderer.cpp
@@ -87,7 +87,11 @@ BaseRenderer::BaseRenderer(
     RENDERER_LOG_DEBUG("creating OSL shading system...");
     m_renderer_services = new RendererServices(m_project, *m_texture_system);
 
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+    m_shading_system = new OSL::ShadingSystem(
+#else
     m_shading_system = OSL::ShadingSystem::create(
+#endif
         m_renderer_services,
         m_texture_system,
         m_error_handler);
@@ -122,7 +126,13 @@ BaseRenderer::~BaseRenderer()
 #ifdef APPLESEED_WITH_OSL
     RENDERER_LOG_DEBUG("destroying OSL shading system...");
     m_project.get_scene()->release_optimized_osl_shader_groups();
+
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+    delete m_shading_system;
+#else
     OSL::ShadingSystem::destroy(m_shading_system);
+#endif
+
     delete m_renderer_services;
 #endif
 
diff --git a/src/appleseed/renderer/kernel/rendering/rendererservices.cpp b/src/appleseed/renderer/kernel/rendering/rendererservices.cpp
index 9416f2f599..08f6b510d4 100644
--- a/src/appleseed/renderer/kernel/rendering/rendererservices.cpp
+++ b/src/appleseed/renderer/kernel/rendering/rendererservices.cpp
@@ -504,6 +504,7 @@ bool RendererServices::get_userdata(
     return false;
 }
 
+#if OSL_LIBRARY_VERSION_CODE < 10700
 bool RendererServices::has_userdata(
     OIIO::ustring               name,
     OIIO::TypeDesc              type,
@@ -511,6 +512,7 @@ bool RendererServices::has_userdata(
 {
     return false;
 }
+#endif
 
 #define IMPLEMENT_ATTR_GETTER(name)         \
     bool RendererServices::get_##name(      \
diff --git a/src/appleseed/renderer/kernel/rendering/rendererservices.h b/src/appleseed/renderer/kernel/rendering/rendererservices.h
index aa74629e84..521a674abe 100644
--- a/src/appleseed/renderer/kernel/rendering/rendererservices.h
+++ b/src/appleseed/renderer/kernel/rendering/rendererservices.h
@@ -295,11 +295,12 @@ class RendererServices
         OSL::ShaderGlobals*         sg,
         void*                       val) APPLESEED_OVERRIDE;
 
-    // Does the current object have the named user-data associated with it?
+#if OSL_LIBRARY_VERSION_CODE < 10700
     virtual bool has_userdata(
-        OIIO::ustring               name,
-        OIIO::TypeDesc              type,
-        OSL::ShaderGlobals*         sg) APPLESEED_OVERRIDE;
+        OIIO::ustring       name,
+        OIIO::TypeDesc      type,
+        OSL::ShaderGlobals* sg) APPLESEED_OVERRIDE;
+#endif
 
   private:
     // This code based on OSL's test renderer.
diff --git a/src/appleseed/renderer/kernel/shading/closures.cpp b/src/appleseed/renderer/kernel/shading/closures.cpp
index 80380c0d90..b98fccd711 100644
--- a/src/appleseed/renderer/kernel/shading/closures.cpp
+++ b/src/appleseed/renderer/kernel/shading/closures.cpp
@@ -44,6 +44,7 @@
 BEGIN_OSL_INCLUDES
 #include "OSL/genclosure.h"
 #include "OSL/oslclosure.h"
+#include "OSL/oslversion.h"
 END_OSL_INCLUDES
 
 // Boost headers.
@@ -1125,7 +1126,11 @@ void CompositeSurfaceClosure::process_closure_tree(
     if (closure == 0)
         return;
 
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+    switch (closure->id)
+#else
     switch (closure->type)
+#endif
     {
       case OSL::ClosureColor::MUL:
         {
@@ -1143,7 +1148,7 @@ void CompositeSurfaceClosure::process_closure_tree(
         }
         break;
 
-      case OSL::ClosureColor::COMPONENT:
+      default:
         {
             const OSL::ClosureComponent* c = reinterpret_cast<const OSL::ClosureComponent*>(closure);
             const Color3f w = weight * Color3f(c->w);
@@ -1152,8 +1157,6 @@ void CompositeSurfaceClosure::process_closure_tree(
                 g_closure_convert_funs[c->id](*this, original_shading_basis, c->data(), w);
         }
         break;
-
-      assert_otherwise;
     }
 }
 
@@ -1178,7 +1181,11 @@ void CompositeSubsurfaceClosure::process_closure_tree(
     if (closure == 0)
         return;
 
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+    switch (closure->id)
+#else
     switch (closure->type)
+#endif
     {
       case OSL::ClosureColor::MUL:
         {
@@ -1195,7 +1202,7 @@ void CompositeSubsurfaceClosure::process_closure_tree(
         }
         break;
 
-      case OSL::ClosureColor::COMPONENT:
+      default:
         {
             const OSL::ClosureComponent* c = reinterpret_cast<const OSL::ClosureComponent*>(closure);
 
@@ -1213,8 +1220,6 @@ void CompositeSubsurfaceClosure::process_closure_tree(
             }
         }
         break;
-
-      assert_otherwise;
     }
 }
 
@@ -1253,7 +1258,11 @@ void CompositeEmissionClosure::process_closure_tree(
     if (closure == 0)
         return;
 
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+    switch (closure->id)
+#else
     switch (closure->type)
+#endif
     {
       case OSL::ClosureColor::MUL:
         {
@@ -1270,7 +1279,7 @@ void CompositeEmissionClosure::process_closure_tree(
         }
         break;
 
-      case OSL::ClosureColor::COMPONENT:
+      default:
         {
             const OSL::ClosureComponent* c = reinterpret_cast<const OSL::ClosureComponent*>(closure);
 
@@ -1278,8 +1287,6 @@ void CompositeEmissionClosure::process_closure_tree(
                 m_total_weight += weight * Color3f(c->w);
         }
         break;
-
-      assert_otherwise;
     }
 }
 
@@ -1296,7 +1303,11 @@ namespace
     {
         if (closure)
         {
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+            switch (closure->id)
+#else
             switch (closure->type)
+#endif
             {
               case OSL::ClosureColor::MUL:
                 {
@@ -1313,14 +1324,12 @@ namespace
                 }
                 break;
 
-              case OSL::ClosureColor::COMPONENT:
+              default:
                 {
                     const OSL::ClosureComponent* c = reinterpret_cast<const OSL::ClosureComponent*>(closure);
                     return c->id == closure_id ? Color3f(c->w) : Color3f(0.0f);
                 }
                 break;
-
-              assert_otherwise;
             }
         }
 
diff --git a/src/appleseed/renderer/kernel/shading/oslshadergroupexec.cpp b/src/appleseed/renderer/kernel/shading/oslshadergroupexec.cpp
index 897c510710..df866ddc0d 100644
--- a/src/appleseed/renderer/kernel/shading/oslshadergroupexec.cpp
+++ b/src/appleseed/renderer/kernel/shading/oslshadergroupexec.cpp
@@ -199,7 +199,11 @@ Color3f OSLShaderGroupExec::execute_background(
     sg.raytype = VisibilityFlags::CameraRay;
 
     m_osl_shading_system.execute(
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+        m_osl_shading_context,
+#else
         *m_osl_shading_context,
+#endif
         *shader_group.shader_group_ref(),
         sg);
 
@@ -220,7 +224,11 @@ void OSLShaderGroupExec::do_execute(
         m_osl_shading_system.renderer());
 
     m_osl_shading_system.execute(
+#if OSL_LIBRARY_VERSION_CODE >= 10700
+        m_osl_shading_context,
+#else
         *m_osl_shading_context,
+#endif
         *shader_group.shader_group_ref(),
         shading_point.get_osl_shader_globals());
 }
diff --git a/src/appleseed/renderer/kernel/shading/oslshadergroupexec.h b/src/appleseed/renderer/kernel/shading/oslshadergroupexec.h
index f44c2b2bce..ad52ede535 100644
--- a/src/appleseed/renderer/kernel/shading/oslshadergroupexec.h
+++ b/src/appleseed/renderer/kernel/shading/oslshadergroupexec.h
@@ -42,6 +42,7 @@
 #include "foundation/platform/oslheaderguards.h"
 BEGIN_OSL_INCLUDES
 #include "OSL/oslexec.h"
+#include "OSL/oslversion.h"
 END_OSL_INCLUDES
 
 // Forward declarations.