diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 37538f1..24bb214 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -13,9 +13,9 @@ env:
   COBOL4J_LIB_DIR: /usr/lib/opensourcecobol4j
   COBOL4J_LIBCOBJ_JAR_PATH: /usr/lib/opensourcecobol4j/libcobj.jar
   OCESQL4J_LIB_DIR: /usr/lib/Open-COBOL-ESQL-4j
-  OCESQL4J_POSTGRESQL_JDBC_PATH: /usr/lib/Open-COBOL-ESQL-4j/postgresql.jar
   OCESQL4J_OCESQL4J_JAR_PATH: /usr/lib/Open-COBOL-ESQL-4j/ocesql4j.jar
-  CLASSPATH: ":/usr/lib/opensourcecobol4j/libcobj.jar:/usr/lib/Open-COBOL-ESQL-4j/postgresql.jar:/usr/lib/Open-COBOL-ESQL-4j/ocesql4j.jar"
+  CLASSPATH: ":/usr/lib/Open-COBOL-ESQL-4j/ocesql4j.jar"
+
 
 jobs:
   Open-COBOL-ESQL-4j-tests:
@@ -90,12 +90,6 @@ jobs:
       # Checkout
       - name: Checkout Open-COBOL-ESQL-4j
         uses: actions/checkout@v3
-
-      # Install JDBC
-      - name: Install JDBC
-        run: |
-          mkdir -p $COBOL4J_LIB_DIR $OCESQL4J_LIB_DIR
-          curl -L -o $OCESQL4J_POSTGRESQL_JDBC_PATH https://jdbc.postgresql.org/download/postgresql-42.2.24.jre6.jar
           
       # Checkout opensource COBOL 4J
       - name: Checkout opensourcecobol 4J
@@ -115,7 +109,6 @@ jobs:
       # Build and Install Open COBOL ESQL 4J
       - name: Install Open COBOL ESQL 4J
         run: |
-          cp $OCESQL4J_POSTGRESQL_JDBC_PATH dblibj/lib
           cp $COBOL4J_LIBCOBJ_JAR_PATH dblibj/lib
           sh configure --prefix=/usr/
           make
diff --git a/.github/workflows/coverage.yml b/.github/workflows/coverage.yml
index ca8e4f0..9cecc51 100644
--- a/.github/workflows/coverage.yml
+++ b/.github/workflows/coverage.yml
@@ -1,4 +1,4 @@
-name: Make a coverage report
+name: Coverage
 
 on:
   push:
@@ -10,9 +10,8 @@ env:
   COBOL4J_LIB_DIR: /usr/lib/opensourcecobol4j
   COBOL4J_LIBCOBJ_JAR_PATH: /usr/lib/opensourcecobol4j/libcobj.jar
   OCESQL4J_LIB_DIR: /usr/lib/Open-COBOL-ESQL-4j
-  OCESQL4J_POSTGRESQL_JDBC_PATH: /usr/lib/Open-COBOL-ESQL-4j/postgresql.jar
   OCESQL4J_OCESQL4J_JAR_PATH: /usr/lib/Open-COBOL-ESQL-4j/ocesql4j.jar
-  CLASSPATH: ":/usr/lib/opensourcecobol4j/sqlite.jar:/usr/lib/opensourcecobol4j/libcobj.jar:/usr/lib/Open-COBOL-ESQL-4j/postgresql.jar:/usr/lib/Open-COBOL-ESQL-4j/ocesql4j.jar"
+  CLASSPATH: ":/usr/lib/Open-COBOL-ESQL-4j/ocesql4j.jar"
 
 jobs:
   make-coverage-report:
@@ -58,12 +57,6 @@ jobs:
       # Checkout
       - name: Checkout Open-COBOL-ESQL-4j
         uses: actions/checkout@v3
-
-      # Install JDBC
-      - name: Install JDBC
-        run: |
-          sudo mkdir -p $COBOL4J_LIB_DIR $OCESQL4J_LIB_DIR
-          sudo curl -L -o $OCESQL4J_POSTGRESQL_JDBC_PATH https://jdbc.postgresql.org/download/postgresql-42.2.24.jre6.jar
           
       # Checkout opensource COBOL 4J
       - name: Checkout opensourcecobol 4J
@@ -83,7 +76,6 @@ jobs:
       # Build and Install Open COBOL ESQL 4J
       - name: Install Open COBOL ESQL 4J
         run: |
-          cp $OCESQL4J_POSTGRESQL_JDBC_PATH dblibj/lib
           cp $COBOL4J_LIBCOBJ_JAR_PATH dblibj/lib
           sh configure CFLAGS='-fprofile-arcs -ftest-coverage' --prefix=/usr/
           make
diff --git a/dblibj/Makefile.am b/dblibj/Makefile.am
index 74b7d2c..709efb0 100644
--- a/dblibj/Makefile.am
+++ b/dblibj/Makefile.am
@@ -26,8 +26,7 @@ SETTING_FILES = \
     scalastyle-config.xml
 
 JAR_DEPENDENCIES = \
-    lib/libcobj.jar \
-    lib/postgresql.jar
+    lib/libcobj.jar
 
 TARGET_JAR = target/scala-2.13/ocesql4j.jar
 
diff --git a/dblibj/Makefile.in b/dblibj/Makefile.in
index 686cc22..aa9bf76 100644
--- a/dblibj/Makefile.in
+++ b/dblibj/Makefile.in
@@ -277,8 +277,7 @@ SETTING_FILES = \
     scalastyle-config.xml
 
 JAR_DEPENDENCIES = \
-    lib/libcobj.jar \
-    lib/postgresql.jar
+    lib/libcobj.jar
 
 TARGET_JAR = target/scala-2.13/ocesql4j.jar
 all: all-am
diff --git a/dblibj/build.sbt b/dblibj/build.sbt
index 2743bb3..6572dab 100755
--- a/dblibj/build.sbt
+++ b/dblibj/build.sbt
@@ -4,12 +4,9 @@ version := "0.1"
 
 scalaVersion := "2.13.6"
 
-val scalaTest = "org.scalatest" %% "scalatest" % "3.0.8" % Test
-
-unmanagedJars in Compile += file("lib/postgresql-42.2.24.jre6.jar")
-
 libraryDependencies ++= Seq(
-  scalaTest
+  "org.scalatest" %% "scalatest" % "3.0.8" % Test,
+  "org.postgresql" % "postgresql" % "42.2.5"
 )
 
 assemblyJarName := "ocesql4j.jar"