diff --git a/pkgs/development/interpreters/erlang/R18.nix b/pkgs/development/interpreters/erlang/R18.nix
index 39a1a8a0048..967940ca184 100644
--- a/pkgs/development/interpreters/erlang/R18.nix
+++ b/pkgs/development/interpreters/erlang/R18.nix
@@ -12,8 +12,8 @@ let
   };
 
 in mkDerivation rec {
-  version = "18.3.4.4";
-  sha256 = "0wilm21yi9m3v6j26vc04hsa58cxca5z4q9yxx71hm81cbm1xbwk";
+  version = "18.3.4.7";
+  sha256 = "1l66vzbb1vidrmf6gr84l34kgrpb9k7z2170bac4c6aviah9r02l";
 
   patches = [
     rmAndPwdPatch
diff --git a/pkgs/development/interpreters/erlang/R19.nix b/pkgs/development/interpreters/erlang/R19.nix
index 5e2e1c7f215..aa8c941eb93 100644
--- a/pkgs/development/interpreters/erlang/R19.nix
+++ b/pkgs/development/interpreters/erlang/R19.nix
@@ -1,8 +1,8 @@
 { mkDerivation, fetchurl, fetchpatch }:
 
 mkDerivation rec {
-  version = "19.3";
-  sha256 = "0pp2hl8jf4iafpnsmf0q7jbm313daqzif6ajqcmjyl87m5pssr86";
+  version = "19.3.6.4";
+  sha256 = "1w0h3wj2h58m3jrfgw56xab2352na3i9ccrbpfs4420dn7igf071";
 
   patches = [
     # macOS 10.13 crypto fix from OTP-20.1.2
diff --git a/pkgs/development/interpreters/erlang/R20.nix b/pkgs/development/interpreters/erlang/R20.nix
index cf94a8800f9..866a38e2575 100644
--- a/pkgs/development/interpreters/erlang/R20.nix
+++ b/pkgs/development/interpreters/erlang/R20.nix
@@ -1,8 +1,8 @@
 { mkDerivation, fetchurl }:
 
 mkDerivation rec {
-  version = "20.1";
-  sha256 = "13f53lzgq2himg9kax41f66rzv5pjfrb1ln8b54yv9spkqx2hqqi";
+  version = "20.1.7";
+  sha256 = "0sbxl10d76bm7awxb9s07l9815jiwfg78bps07xj2ircxdr08pls";
 
   prePatch = ''
     substituteInPlace configure.in --replace '`sw_vers -productVersion`' '10.10'
diff --git a/pkgs/top-level/beam-packages.nix b/pkgs/top-level/beam-packages.nix
index bffd86da52e..8a63dcc1a4f 100644
--- a/pkgs/top-level/beam-packages.nix
+++ b/pkgs/top-level/beam-packages.nix
@@ -14,8 +14,6 @@ rec {
     erlang_nox = erlangR19_nox;
 
     # These are standard Erlang versions, using the generic builder.
-    erlangR16 = lib.callErlang ../development/interpreters/erlang/R16.nix {};
-    erlangR16_odbc = erlangR16.override { odbcSupport = true; };
     erlangR17 = lib.callErlang ../development/interpreters/erlang/R17.nix {};
     erlangR17_odbc = erlangR17.override { odbcSupport = true; };
     erlangR17_javac = erlangR17.override { javacSupport = true; };
@@ -75,7 +73,6 @@ rec {
 
     # Packages built with default Erlang version.
     erlang = packagesWith interpreters.erlang;
-    erlangR16 = packagesWith interpreters.erlangR16;
     erlangR17 = packagesWith interpreters.erlangR17;
     erlangR18 = packagesWith interpreters.erlangR18;
     erlangR19 = packagesWith interpreters.erlangR19;