diff --git a/Dockerfile b/Dockerfile
index 16995e7..3da290e 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -77,7 +77,7 @@ ENV APP_VERSION=$APP_VERSION
 # Set production mode for Docker containers
 ENV ENV_MODE=production
 
-# Install PostgreSQL server and client tools (versions 13-17)
+# Install PostgreSQL server and client tools (versions 12-18)
 RUN apt-get update && apt-get install -y --no-install-recommends \
   wget ca-certificates gnupg lsb-release sudo gosu && \
   wget -qO- https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - && \
@@ -85,7 +85,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   > /etc/apt/sources.list.d/pgdg.list && \
   apt-get update && \
   apt-get install -y --no-install-recommends \
-  postgresql-17 postgresql-18 postgresql-client-13 postgresql-client-14 postgresql-client-15 \
+  postgresql-17 postgresql-18 postgresql-client-12 postgresql-client-13 postgresql-client-14 postgresql-client-15 \
   postgresql-client-16 postgresql-client-17 postgresql-client-18 && \
   rm -rf /var/lib/apt/lists/*
 
diff --git a/README.md b/README.md
index 9ffe76c..d078c4d 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@
   [![Docker Pulls](https://img.shields.io/docker/pulls/rostislavdugin/postgresus?color=brightgreen)](https://hub.docker.com/r/rostislavdugin/postgresus)
   [![Platform](https://img.shields.io/badge/platform-linux%20%7C%20macos%20%7C%20windows-lightgrey)](https://github.com/RostislavDugin/postgresus)
   
-  [![PostgreSQL](https://img.shields.io/badge/PostgreSQL-13%20%7C%2014%20%7C%2015%20%7C%2016%20%7C%2017%20%7C%2018-336791?logo=postgresql&logoColor=white)](https://www.postgresql.org/)
+  [![PostgreSQL](https://img.shields.io/badge/PostgreSQL-12%20%7C%2013%20%7C%2014%20%7C%2015%20%7C%2016%20%7C%2017%20%7C%2018-336791?logo=postgresql&logoColor=white)](https://www.postgresql.org/)
   [![Self Hosted](https://img.shields.io/badge/self--hosted-yes-brightgreen)](https://github.com/RostislavDugin/postgresus)
   [![Open Source](https://img.shields.io/badge/open%20source-❤️-red)](https://github.com/RostislavDugin/postgresus)
   
@@ -54,7 +54,7 @@
 
 ### 🐘 **PostgreSQL Support**
 
-- **Multiple versions**: PostgreSQL 13, 14, 15, 16, 17 and 18
+- **Multiple versions**: PostgreSQL 12, 13, 14, 15, 16, 17 and 18
 - **SSL support**: Secure connections available
 - **Easy restoration**: One-click restore from any backup
 
diff --git a/backend/internal/features/backups/backups/usecases/postgresql/create_backup_uc.go b/backend/internal/features/backups/backups/usecases/postgresql/create_backup_uc.go
index 4bcfd55..cb1e1f7 100644
--- a/backend/internal/features/backups/backups/usecases/postgresql/create_backup_uc.go
+++ b/backend/internal/features/backups/backups/usecases/postgresql/create_backup_uc.go
@@ -70,10 +70,10 @@ func (uc *CreatePostgresqlBackupUsecase) Execute(
 		"--verbose", // Add verbose output to help with debugging
 	}
 
-	// Use zstd compression level 5 for PostgreSQL 15+ (better compression and speed)
-	// Fall back to gzip compression level 5 for older versions
-	if pg.Version == tools.PostgresqlVersion13 || pg.Version == tools.PostgresqlVersion14 ||
-		pg.Version == tools.PostgresqlVersion15 {
+	// Use zstd compression level 5 for PostgreSQL 16+ (better compression and speed)
+	// Fall back to gzip compression level 5 for older versions (12-15)
+	if pg.Version == tools.PostgresqlVersion12 || pg.Version == tools.PostgresqlVersion13 ||
+		pg.Version == tools.PostgresqlVersion14 || pg.Version == tools.PostgresqlVersion15 {
 		args = append(args, "-Z", "5")
 		uc.logger.Info("Using gzip compression level 5 (zstd not available)", "version", pg.Version)
 	} else {
diff --git a/backend/internal/util/tools/enums.go b/backend/internal/util/tools/enums.go
index c7cdf66..0600f39 100644
--- a/backend/internal/util/tools/enums.go
+++ b/backend/internal/util/tools/enums.go
@@ -15,6 +15,7 @@ const (
 type PostgresqlVersion string
 
 const (
+	PostgresqlVersion12 PostgresqlVersion = "12"
 	PostgresqlVersion13 PostgresqlVersion = "13"
 	PostgresqlVersion14 PostgresqlVersion = "14"
 	PostgresqlVersion15 PostgresqlVersion = "15"
@@ -32,6 +33,8 @@ const (
 
 func GetPostgresqlVersionEnum(version string) PostgresqlVersion {
 	switch version {
+	case "12":
+		return PostgresqlVersion12
 	case "13":
 		return PostgresqlVersion13
 	case "14":
diff --git a/backend/internal/util/tools/postgresql.go b/backend/internal/util/tools/postgresql.go
index 80c6c66..63915b9 100644
--- a/backend/internal/util/tools/postgresql.go
+++ b/backend/internal/util/tools/postgresql.go
@@ -30,7 +30,7 @@ func GetPostgresqlExecutable(
 	return filepath.Join(basePath, executableName)
 }
 
-// VerifyPostgresesInstallation verifies that PostgreSQL versions 13-17 are installed
+// VerifyPostgresesInstallation verifies that PostgreSQL versions 12-18 are installed
 // in the current environment. Each version should be installed with the required
 // client tools (pg_dump, psql) available.
 // In development: ./tools/postgresql/postgresql-{VERSION}/bin
@@ -41,6 +41,7 @@ func VerifyPostgresesInstallation(
 	postgresesInstallDir string,
 ) {
 	versions := []PostgresqlVersion{
+		PostgresqlVersion12,
 		PostgresqlVersion13,
 		PostgresqlVersion14,
 		PostgresqlVersion15,
diff --git a/backend/tools/download_linux.sh b/backend/tools/download_linux.sh
index c1eb263..f94fcfa 100644
--- a/backend/tools/download_linux.sh
+++ b/backend/tools/download_linux.sh
@@ -5,7 +5,7 @@ set -e  # Exit on any error
 # Ensure non-interactive mode for apt
 export DEBIAN_FRONTEND=noninteractive
 
-echo "Installing PostgreSQL client tools versions 13-18 for Linux (Debian/Ubuntu)..."
+echo "Installing PostgreSQL client tools versions 12-18 for Linux (Debian/Ubuntu)..."
 echo
 
 # Check if running on supported system
@@ -47,7 +47,7 @@ echo "Updating package list..."
 $SUDO apt-get update -qq -y
 
 # Install client tools for each version
-versions="13 14 15 16 17 18"
+versions="12 13 14 15 16 17 18"
 
 for version in $versions; do
     echo "Installing PostgreSQL $version client tools..."
diff --git a/backend/tools/download_macos.sh b/backend/tools/download_macos.sh
old mode 100644
new mode 100755
index 13937b1..9ff11fe
--- a/backend/tools/download_macos.sh
+++ b/backend/tools/download_macos.sh
@@ -2,7 +2,7 @@
 
 set -e  # Exit on any error
 
-echo "Installing PostgreSQL client tools versions 13-18 for MacOS..."
+echo "Installing PostgreSQL client tools versions 12-18 for MacOS..."
 echo
 
 # Check if Homebrew is installed
@@ -31,6 +31,7 @@ brew install wget openssl readline zlib
 
 # PostgreSQL source URLs
 declare -A PG_URLS=(
+    ["12"]="https://ftp.postgresql.org/pub/source/v12.20/postgresql-12.20.tar.gz"
     ["13"]="https://ftp.postgresql.org/pub/source/v13.16/postgresql-13.16.tar.gz"
     ["14"]="https://ftp.postgresql.org/pub/source/v14.13/postgresql-14.13.tar.gz"
     ["15"]="https://ftp.postgresql.org/pub/source/v15.8/postgresql-15.8.tar.gz"
@@ -107,7 +108,7 @@ build_postgresql_client() {
 }
 
 # Build each version
-versions="13 14 15 16 17 18"
+versions="12 13 14 15 16 17 18"
 
 for version in $versions; do
     url=${PG_URLS[$version]}
diff --git a/backend/tools/download_windows.bat b/backend/tools/download_windows.bat
index acb9825..8702e4f 100644
--- a/backend/tools/download_windows.bat
+++ b/backend/tools/download_windows.bat
@@ -1,7 +1,7 @@
 @echo off
 setlocal enabledelayedexpansion
 
-echo Downloading and installing PostgreSQL versions 13-18 for Windows...
+echo Downloading and installing PostgreSQL versions 12-18 for Windows...
 echo.
 
 :: Create downloads and postgresql directories if they don't exist
@@ -17,6 +17,7 @@ cd downloads
 set "BASE_URL=https://get.enterprisedb.com/postgresql"
 
 :: Define versions and their corresponding download URLs
+set "PG12_URL=%BASE_URL%/postgresql-12.20-1-windows-x64.exe"
 set "PG13_URL=%BASE_URL%/postgresql-13.16-1-windows-x64.exe"
 set "PG14_URL=%BASE_URL%/postgresql-14.13-1-windows-x64.exe"
 set "PG15_URL=%BASE_URL%/postgresql-15.8-1-windows-x64.exe"
@@ -25,7 +26,7 @@ set "PG17_URL=%BASE_URL%/postgresql-17.0-1-windows-x64.exe"
 set "PG18_URL=%BASE_URL%/postgresql-18.0-1-windows-x64.exe"
 
 :: Array of versions
-set "versions=13 14 15 16 17 18"
+set "versions=12 13 14 15 16 17 18"
 
 :: Download and install each version
 for %%v in (%versions%) do (
diff --git a/backend/tools/readme.md b/backend/tools/readme.md
index 94ab978..1e932a7 100644
--- a/backend/tools/readme.md
+++ b/backend/tools/readme.md
@@ -1,6 +1,6 @@
 This directory is needed only for development and CI\CD.
 
-We have to download and install all the PostgreSQL versions from 13 to 18 locally.
+We have to download and install all the PostgreSQL versions from 12 to 18 locally.
 This is needed so we can call pg_dump, pg_dumpall, etc. on each version of the PostgreSQL database.
 
 You do not need to install PostgreSQL fully with all the components.
@@ -8,6 +8,7 @@ We only need the client tools (pg_dump, pg_dumpall, psql, etc.) for each version
 
 We have to install the following:
 
+- PostgreSQL 12
 - PostgreSQL 13
 - PostgreSQL 14
 - PostgreSQL 15
@@ -72,6 +73,7 @@ The final directory structure should match:
 
 For example:
 
+- `./tools/postgresql/postgresql-12/bin/pg_dump`
 - `./tools/postgresql/postgresql-13/bin/pg_dump`
 - `./tools/postgresql/postgresql-14/bin/pg_dump`
 - `./tools/postgresql/postgresql-15/bin/pg_dump`
diff --git a/frontend/src/entity/databases/model/postgresql/PostgresqlVersion.ts b/frontend/src/entity/databases/model/postgresql/PostgresqlVersion.ts
index 5331a98..5a549de 100644
--- a/frontend/src/entity/databases/model/postgresql/PostgresqlVersion.ts
+++ b/frontend/src/entity/databases/model/postgresql/PostgresqlVersion.ts
@@ -1,4 +1,5 @@
 export enum PostgresqlVersion {
+  PostgresqlVersion12 = '12',
   PostgresqlVersion13 = '13',
   PostgresqlVersion14 = '14',
   PostgresqlVersion15 = '15',
diff --git a/frontend/src/features/databases/ui/edit/EditDatabaseSpecificDataComponent.tsx b/frontend/src/features/databases/ui/edit/EditDatabaseSpecificDataComponent.tsx
index 52e836b..a94d74a 100644
--- a/frontend/src/features/databases/ui/edit/EditDatabaseSpecificDataComponent.tsx
+++ b/frontend/src/features/databases/ui/edit/EditDatabaseSpecificDataComponent.tsx
@@ -128,6 +128,7 @@ export const EditDatabaseSpecificDataComponent = ({
               className="max-w-[200px] grow"
               placeholder="Select PG version"
               options={[
+                { label: '12', value: PostgresqlVersion.PostgresqlVersion12 },
                 { label: '13', value: PostgresqlVersion.PostgresqlVersion13 },
                 { label: '14', value: PostgresqlVersion.PostgresqlVersion14 },
                 { label: '15', value: PostgresqlVersion.PostgresqlVersion15 },
diff --git a/frontend/src/features/databases/ui/show/ShowDatabaseSpecificDataComponent.tsx b/frontend/src/features/databases/ui/show/ShowDatabaseSpecificDataComponent.tsx
index 0a9d0e8..abc8926 100644
--- a/frontend/src/features/databases/ui/show/ShowDatabaseSpecificDataComponent.tsx
+++ b/frontend/src/features/databases/ui/show/ShowDatabaseSpecificDataComponent.tsx
@@ -5,6 +5,7 @@ interface Props {
 }
 
 const postgresqlVersionLabels = {
+  [PostgresqlVersion.PostgresqlVersion12]: '12',
   [PostgresqlVersion.PostgresqlVersion13]: '13',
   [PostgresqlVersion.PostgresqlVersion14]: '14',
   [PostgresqlVersion.PostgresqlVersion15]: '15',