diff --git a/pkgs/servers/nosql/cassandra/3.0.nix b/pkgs/servers/nosql/cassandra/3.0.nix
index 7788e3ff381a..d9f5978f2649 100644
--- a/pkgs/servers/nosql/cassandra/3.0.nix
+++ b/pkgs/servers/nosql/cassandra/3.0.nix
@@ -1,7 +1,7 @@
 { callPackage, ... } @ args:
 
 callPackage ./generic.nix (args // {
-  version = "3.0.24";
-  sha256 = "1yxw4jg9n49dbi1mjdfpxczsznl9m6sxlzkmzjancmjzvj5s6bvz";
+  version = "3.0.26";
+  sha256 = "09wim1w2yizcqpja62jk64fhaw3jgnrgrjlrm4kgmcc3g3bsmw6i";
   generation = "3_0";
 })
diff --git a/pkgs/servers/nosql/cassandra/3.11.nix b/pkgs/servers/nosql/cassandra/3.11.nix
index bcdfc8793db5..fc839fa8c356 100644
--- a/pkgs/servers/nosql/cassandra/3.11.nix
+++ b/pkgs/servers/nosql/cassandra/3.11.nix
@@ -1,7 +1,7 @@
 { callPackage, ... } @ args:
 
 callPackage ./generic.nix (args // {
-  version = "3.11.10";
-  sha256 = "1wcv0drhb765fda6kkpsxsyfdv4cqf7nqfwc4bimh4c4djap5rxv";
+  version = "3.11.12";
+  sha256 = "16j58l7r47qrfh8q7fm92y935ykgvnbj3qn984c42qda15x92hkw";
   generation = "3_11";
 })
diff --git a/pkgs/servers/nosql/cassandra/generic.nix b/pkgs/servers/nosql/cassandra/generic.nix
index 6e2a55b4e948..ca11b838e325 100644
--- a/pkgs/servers/nosql/cassandra/generic.nix
+++ b/pkgs/servers/nosql/cassandra/generic.nix
@@ -54,7 +54,6 @@ stdenv.mkDerivation rec {
        $out/LICENSE.txt \
        $out/NEWS.txt \
        $out/NOTICE.txt \
-       $out/javadoc \
        $out/share/doc/${pname}-${version}
 
     if [[ -d $out/doc ]]; then