diff --git a/pkgs/development/interpreters/erlang/25.nix b/pkgs/development/interpreters/erlang/25.nix
index d1c6e0aff3c9f..dd2e5e945bb47 100644
--- a/pkgs/development/interpreters/erlang/25.nix
+++ b/pkgs/development/interpreters/erlang/25.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
 mkDerivation {
-  version = "25.3.2.15";
-  sha256 = "sha256-y1QZZ+W5jkAygTRtXVu6FyG4I98SGXXourDfPPlEfg8=";
+  version = "25.3.2.16";
+  sha256 = "sha256-fo2wRC+Yb5Tfw6dgDhHv77SFtFMYYKnAZqQSapkWkEw=";
 }
diff --git a/pkgs/development/interpreters/erlang/26.nix b/pkgs/development/interpreters/erlang/26.nix
index e7c256d1de785..6a91f3795d09e 100644
--- a/pkgs/development/interpreters/erlang/26.nix
+++ b/pkgs/development/interpreters/erlang/26.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
 mkDerivation {
-  version = "26.2.5.4";
-  sha256 = "sha256-fvpSvsr7wWgFKa8vODVz4RUn8JKe8NuT9sjvau38B+Y=";
+  version = "26.2.5.6";
+  sha256 = "sha256-5FsLAhbWqXjP18UQGNkbNQmFXlHiNoLY1aTzutLubZI=";
 }
diff --git a/pkgs/development/interpreters/erlang/27.nix b/pkgs/development/interpreters/erlang/27.nix
index 91845a1bc28a9..9085ecf4017c7 100644
--- a/pkgs/development/interpreters/erlang/27.nix
+++ b/pkgs/development/interpreters/erlang/27.nix
@@ -1,6 +1,6 @@
 { mkDerivation }:
 
 mkDerivation {
-  version = "27.1.2";
-  sha256 = "sha256-urHJMPo9XG+sIBuCaWvEhAcykGxlVSdKKem7vCiMjcg=";
+  version = "27.2";
+  sha256 = "sha256-8kRneNkDErUX/AiWy8WDCpFxxS1w4DfM+5V6Hz8D8wM=";
 }
diff --git a/pkgs/development/interpreters/erlang/generic-builder.nix b/pkgs/development/interpreters/erlang/generic-builder.nix
index e062ec58c81ca..38c8278b02a08 100644
--- a/pkgs/development/interpreters/erlang/generic-builder.nix
+++ b/pkgs/development/interpreters/erlang/generic-builder.nix
@@ -242,7 +242,7 @@ stdenv.mkDerivation (
           if [ "$latest" != "${version}" ]; then
             nixpkgs="$(git rev-parse --show-toplevel)"
             nix_file="$nixpkgs/pkgs/development/interpreters/erlang/${major}.nix"
-            update-source-version ${baseName}R${major} "$latest" --version-key=version --print-changes --file="$nix_file"
+            update-source-version ${baseName}_${major} "$latest" --version-key=version --print-changes --file="$nix_file"
           else
             echo "${baseName}R${major} is already up-to-date"
           fi