diff --git a/.circleci/config.yml b/.circleci/config.yml
index 1017d9dd55..620b713bf8 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -334,7 +334,7 @@ jobs:
     working_directory: ~/querydsl
     docker:
       - image: velo/toolchains-4-ci-builds:latest
-      - image: jacobalberty/firebird:2.5.9-ss
+      - image: jacobalberty/firebird:v4
         environment:
           - ISC_PASSWORD=masterkey
           - FIREBIRD_DATABASE=querydsl.fdb
diff --git a/pom.xml b/pom.xml
index cce3ad5e15..a61d780e41 100644
--- a/pom.xml
+++ b/pom.xml
@@ -111,7 +111,7 @@
     <cubrid.version>9.3.9.0002</cubrid.version>
     <sqlite.version>3.51.2.0</sqlite.version>
     <teradata.version>13.10.00.35</teradata.version>
-    <firebird.version>5.0.10.java11</firebird.version>
+    <firebird.version>6.0.4</firebird.version>
     <mongodb.version>5.6.3</mongodb.version>
 
     <r2dbc.version>1.0.0.RELEASE</r2dbc.version>