diff --git a/pkgs/development/tools/build-managers/rebar3/default.nix b/pkgs/development/tools/build-managers/rebar3/default.nix
index c7b6f72ac8ec..56859969708e 100644
--- a/pkgs/development/tools/build-managers/rebar3/default.nix
+++ b/pkgs/development/tools/build-managers/rebar3/default.nix
@@ -3,7 +3,7 @@
   writeScript, common-updater-scripts, coreutils, git, gnused, nix, rebar3-nix }:
 
 let
-  version = "3.18.0";
+  version = "3.20.0";
   owner = "erlang";
   deps = import ./rebar-deps.nix { inherit fetchFromGitHub fetchgit fetchHex; };
   rebar3 = stdenv.mkDerivation rec {
@@ -16,7 +16,7 @@ let
       inherit owner;
       repo = pname;
       rev = version;
-      sha256 = "09648hzc2mnjwf9klm20cg4hb5rn2xv2gmzcg98ffv37p5yfl327";
+      sha256 = "1mh5cd3cpnvfv2cwm5bs64ldd2d7iqvikn47v9bpfd76nck3h8nh";
     };
 
     buildInputs = [ erlang ];
diff --git a/pkgs/development/tools/build-managers/rebar3/rebar-deps.nix b/pkgs/development/tools/build-managers/rebar3/rebar-deps.nix
index 3848600cb4c7..fa4e8b04f8bc 100644
--- a/pkgs/development/tools/build-managers/rebar3/rebar-deps.nix
+++ b/pkgs/development/tools/build-managers/rebar3/rebar-deps.nix
@@ -16,11 +16,11 @@ let
     };
     relx = builder {
       name = "relx";
-      version = "4.6.0";
+      version = "4.7.0";
       src = fetchHex {
         pkg = "relx";
-        version = "4.6.0";
-        sha256 = "sha256-L/gTHGMJPGIcazfcUtGyhIqTiIZYS0twHTW9vkN39Qk=";
+        version = "4.7.0";
+        sha256 = "sha256-oqv6+nC846C5im5RQKyYQpuZgPg1/7RzV/BkVCL8L6M=";
       };
       beamDeps = [ bbmustache ];
     };
@@ -86,11 +86,11 @@ let
     };
     certifi = builder {
       name = "certifi";
-      version = "2.8.0";
+      version = "2.9.0";
       src = fetchHex {
         pkg = "certifi";
-        version = "2.8.0";
-        sha256 = "sha256-asfvwcb4YAsI1iUpLUu/WE4UhHzhtrXETZg9Jz4Ql+o=";
+        version = "2.9.0";
+        sha256 = "sha256-Jm2ka9sG1sbTX955m8so022YXUJK18CLW7SPW1zdRkE";
       };
       beamDeps = [ ];
     };