diff --git a/dub.json b/dub.json
index 4f1af98..025223d 100644
--- a/dub.json
+++ b/dub.json
@@ -4,13 +4,14 @@
 		"Johannes Loher"
 	],
 	"dependencies": {
-		"vibe-d": "~>0.8.0",
+		"vibe-d": "0.8.1-rc.2",
 		"poodinis": "~>8.0.0"
 	},
 	"description": "A simple webapplication to edit and view calendar entries",
 	"copyright": "Copyright © 2017, Johannes Loher",
 	"license": "MIT",
 	"versions": [
-		"VibeDefaultMain"
+		"VibeDefaultMain",
+		"VibeUseOpenSSL11"
 	]
 }
\ No newline at end of file
diff --git a/source/authenticator.d b/source/authenticator.d
index 7dceef9..94d48f1 100644
--- a/source/authenticator.d
+++ b/source/authenticator.d
@@ -7,7 +7,7 @@ import vibe.db.mongo.client : MongoClient;
 
 interface Authenticator
 {
-    bool checkUser(string username, string password);
+    bool checkUser(string username, string password) @safe;
 }
 
 class MongoDBAuthenticator : Authenticator
@@ -22,7 +22,7 @@ private:
     string usersCollectionName;
 
 public:
-    bool checkUser(string username, string password)
+    bool checkUser(string username, string password) @safe
     {
         auto users = mongoClient.getCollection(databaseName ~ "." ~ usersCollectionName);
         auto result = users.findOne(["username" : username, "password" : password]);
diff --git a/source/calendarwebapp.d b/source/calendarwebapp.d
index 745e5d3..e140e6f 100644
--- a/source/calendarwebapp.d
+++ b/source/calendarwebapp.d
@@ -26,7 +26,7 @@ import vibe.web.web : errorDisplay, noRoute, redirect, render, SessionVar,
     {
         if (!req.session || !req.session.isKeySet("auth"))
         {
-            () @trusted{ redirect("/login"); }();
+            redirect("/login");
             return AuthInfo.init;
         }
         return req.session.get!AuthInfo("auth");
@@ -44,7 +44,7 @@ public:
         render!("login.dt", _error);
     }
 
-    @noAuth @errorDisplay!getLogin void postLogin(string username, string password)
+    @noAuth @errorDisplay!getLogin void postLogin(string username, string password) @safe
     {
         enforce(authenticator.checkUser(username, password), "Benutzername oder Passwort ungültig");
         immutable AuthInfo authInfo = {username};
@@ -52,7 +52,7 @@ public:
         redirect("/");
     }
 
-    @anyAuth void getLogout()
+    @anyAuth void getLogout() @safe
     {
         terminateSession();
         redirect("/");
@@ -64,7 +64,7 @@ public:
     }
 
     @anyAuth @errorDisplay!getCreate void postCreate(Date begin,
-            Nullable!Date end, string description, string name, EventType type, bool shout)
+            Nullable!Date end, string description, string name, EventType type, bool shout) @safe
     {
         import std.array : replace, split;
 
@@ -79,7 +79,7 @@ public:
         redirect("/");
     }
 
-    @anyAuth void postRemove(BsonObjectID id)
+    @anyAuth void postRemove(BsonObjectID id) @safe
     {
         eventStore.removeEvent(id);
         redirect("/");
diff --git a/source/configuration.d b/source/configuration.d
index 7d11e89..b35a584 100644
--- a/source/configuration.d
+++ b/source/configuration.d
@@ -8,7 +8,7 @@ private:
     string[string] config;
 
 public:
-    this()
+    this() const @safe pure nothrow
     {
         // dfmt off
         config = ["Database name" :           "CalendarWebapp",
@@ -17,7 +17,7 @@ public:
         // dfmt on
     }
 
-    string get(string key)
+    string get(string key) const @safe pure nothrow
     {
         return config[key];
     }
diff --git a/source/event.d b/source/event.d
index 12f1969..7678f1c 100644
--- a/source/event.d
+++ b/source/event.d
@@ -13,29 +13,29 @@ import vibe.db.mongo.client : MongoClient;
 
 interface EventStore
 {
-    Event getEvent(BsonObjectID id);
-    InputRange!Event getAllEvents();
-    void addEvent(Event);
-    InputRange!Event getEventsBeginningBetween(Date begin, Date end);
-    void removeEvent(BsonObjectID id);
+    Event getEvent(BsonObjectID id) @safe;
+    InputRange!Event getAllEvents() @safe;
+    void addEvent(Event) @safe;
+    InputRange!Event getEventsBeginningBetween(Date begin, Date end) @safe;
+    void removeEvent(BsonObjectID id) @safe;
 }
 
 class MongoDBEventStore : EventStore
 {
 public:
-    Event getEvent(BsonObjectID id)
+    Event getEvent(BsonObjectID id) @safe
     {
         return mongoClient.getCollection(databaseName ~ "." ~ entriesCollectionName)
             .findOne(["_id" : id]).deserializeBson!Event;
     }
 
-    InputRange!Event getAllEvents()
+    InputRange!Event getAllEvents() @safe
     {
         return mongoClient.getCollection(databaseName ~ "." ~ entriesCollectionName)
             .find().map!(deserializeBson!Event).inputRangeObject;
     }
 
-    void addEvent(Event event)
+    void addEvent(Event event) @safe
     {
         if (!event.id.valid)
             event.id = BsonObjectID.generate;
@@ -44,7 +44,7 @@ public:
             .insert(event.serializeToBson);
     }
 
-    InputRange!Event getEventsBeginningBetween(Date begin, Date end)
+    InputRange!Event getEventsBeginningBetween(Date begin, Date end) @safe
     {
         return mongoClient.getCollection(databaseName ~ "." ~ entriesCollectionName)
             .find(["$and" : [["date" : ["$gte" : begin.serializeToBson]], ["date"
@@ -52,7 +52,7 @@ public:
             .inputRangeObject;
     }
 
-    void removeEvent(BsonObjectID id)
+    void removeEvent(BsonObjectID id) @safe
     {
         mongoClient.getCollection(databaseName ~ "." ~ entriesCollectionName).remove(["_id" : id]);
     }