diff --git a/lib/Shelley b/lib/Shelley
index fa1b642..2fd9c59 160000
--- a/lib/Shelley
+++ b/lib/Shelley
@@ -1 +1 @@
-Subproject commit fa1b64247f41ec81acb623a44279c814f88eb72c
+Subproject commit 2fd9c5978893b593b03a2d65dceed0f7c7628f97
diff --git a/src/SelectorEngineRegistry.h b/src/SelectorEngineRegistry.h
index c1118e5..2f55657 100644
--- a/src/SelectorEngineRegistry.h
+++ b/src/SelectorEngineRegistry.h
@@ -21,4 +21,5 @@
 + (NSArray *) selectViewsWithEngineNamed:(NSString *)engineName usingSelector:(NSString *)selector;
 
 + (NSArray *)getEngineNames;
++ (id<SelectorEngine>)engineForName:(NSString *)engineName;
 @end
diff --git a/src/SelectorEngineRegistry.m b/src/SelectorEngineRegistry.m
index f0abc7b..21e9a24 100644
--- a/src/SelectorEngineRegistry.m
+++ b/src/SelectorEngineRegistry.m
@@ -32,4 +32,8 @@ + (NSArray *) selectViewsWithEngineNamed:(NSString *)engineName usingSelector:(N
 + (NSArray *)getEngineNames {
     return [s_engines allKeys];
 }
+
++ (id<SelectorEngine>)engineForName:(NSString *)engineName {
+    return [s_engines objectForKey:engineName];
+}
 @end
diff --git a/src/VersionCommand.m b/src/VersionCommand.m
index e9b564f..4e315f7 100644
--- a/src/VersionCommand.m
+++ b/src/VersionCommand.m
@@ -7,6 +7,8 @@
 //
 
 #import "VersionCommand.h"
+#import "SelectorEngineRegistry.h"
+#import "JSON.h"
 
 @implementation VersionCommand {
     NSString *_version;
@@ -28,7 +30,23 @@ - (void)dealloc
 }
 
 - (NSString *)handleCommandWithRequestBody:(NSString *)requestBody {
-    return [NSString stringWithFormat:@"{\"version\":\"%@\"}",_version];
+    NSMutableDictionary *engineVersions = [NSMutableDictionary dictionary];
+    for (NSString *engineName in [SelectorEngineRegistry getEngineNames]) {
+        id<SelectorEngine> engine = [SelectorEngineRegistry engineForName:engineName];
+        SEL versionSel = @selector(version);
+        if ([engine respondsToSelector:versionSel]) {
+            NSDictionary *engineVersionData = [engine performSelector:versionSel];
+            [engineVersions setObject:engineVersionData forKey:engineName];
+        }
+        else {
+            [engineVersions setObject:[NSNull null] forKey:engineName];
+        }
+    }
+    NSDictionary *versionResult = [NSDictionary dictionaryWithObjectsAndKeys:
+                                   _version, @"version",
+                                   engineVersions, @"engines", 
+                                   nil];
+    return TO_JSON(versionResult);
 }
 
 @end
\ No newline at end of file