diff --git a/project-cljs.clj b/project-cljs.clj
index 01aea27..bd92c1a 100644
--- a/project-cljs.clj
+++ b/project-cljs.clj
@@ -1,4 +1,4 @@
-(defproject org.domaindrivenarchitecture/c4k-common-cljs "1.1.6-SNAPSHOT"
+(defproject org.domaindrivenarchitecture/c4k-common-cljs "2.0.0-SNAPSHOT"
   :description "Contains predicates and tools for c4k"
   :url "https://domaindrivenarchitecture.org"
   :license {:name "Apache License, Version 2.0"
diff --git a/project.clj b/project.clj
index 967b672..218018a 100644
--- a/project.clj
+++ b/project.clj
@@ -1,4 +1,4 @@
-(defproject org.domaindrivenarchitecture/c4k-common-clj "1.1.5-SNAPSHOT"
+(defproject org.domaindrivenarchitecture/c4k-common-clj "2.0.0-SNAPSHOT"
   :description "Contains predicates and tools for c4k"
   :url "https://domaindrivenarchitecture.org"
   :license {:name "Apache License, Version 2.0"
diff --git a/src/main/cljc/dda/c4k_common/predicate.cljc b/src/main/cljc/dda/c4k_common/predicate.cljc
index 9c7c992..07ccf7c 100644
--- a/src/main/cljc/dda/c4k_common/predicate.cljc
+++ b/src/main/cljc/dda/c4k_common/predicate.cljc
@@ -12,7 +12,7 @@
 
 (defn letsencrypt-issuer?
   [input]
-  (contains? #{:prod :staging} input))
+  (contains? #{"prod" "staging"} input))
 
 (defn map-or-seq?
   [input]