diff --git a/.github/workflows/backend.yml b/.github/workflows/backend.yml
index 8e21138f..97320265 100644
--- a/.github/workflows/backend.yml
+++ b/.github/workflows/backend.yml
@@ -98,7 +98,7 @@ jobs:
         options: --entrypoint redis-server
 
       db:
-        image: postgres:12.8-alpine
+        image: postgres:15-alpine
         env:
           POSTGRES_PASSWORD: password
         ports:
diff --git a/backend/Gemfile b/backend/Gemfile
index cbe11e3b..c9adaf35 100644
--- a/backend/Gemfile
+++ b/backend/Gemfile
@@ -14,7 +14,7 @@ gem "active_model_serializers", "0.9.8"
 
 # Use postgresql and mongo as the database for Active Record
 gem "mongoid", "7.3.3"
-gem "pg", "1.2.3"
+gem "pg", "~> 1.5.0"
 
 # Use Puma as the app server
 gem "puma", "5.6.4"
diff --git a/backend/Gemfile.lock b/backend/Gemfile.lock
index 33432a51..f34c5533 100644
--- a/backend/Gemfile.lock
+++ b/backend/Gemfile.lock
@@ -283,9 +283,9 @@ GEM
     parser (3.2.2.3)
       ast (~> 2.4.1)
       racc
-    pg (1.2.3)
-    pg (1.2.3-x64-mingw32)
-    pg (1.2.3-x86-mingw32)
+    pg (1.5.3)
+    pg (1.5.3-x64-mingw32)
+    pg (1.5.3-x86-mingw32)
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
@@ -503,7 +503,7 @@ DEPENDENCIES
   nearest_time_zone
   omniauth (= 1.8.1)
   omniauth-facebook (= 3.0.0)
-  pg (= 1.2.3)
+  pg (~> 1.5.0)
   pry-byebug
   pry-doc
   pry-rails
diff --git a/docker-compose.yml b/docker-compose.yml
index af7157d4..fc9eadbc 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,7 +5,7 @@ volumes:
   redis:
 services:
   postgres:
-    image: postgres:12.8-alpine
+    image: postgres:15-alpine
     environment:
       POSTGRES_PASSWORD: password
       PGDATA: /data