diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 74747d3fe15..f64a14137d4 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,3 +1,3 @@
 # From https://github.com/microsoft/vscode-dev-containers/blob/master/containers/go/.devcontainer/Dockerfile
-ARG VARIANT="17-jdk-bookworm"
+ARG VARIANT="21-jdk-bookworm"
 FROM mcr.microsoft.com/vscode/devcontainers/java:${VARIANT}
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index d167be89720..d9a309d3661 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -5,7 +5,7 @@
 		"dockerfile": "Dockerfile",
 		"args": {
 			// Update the VARIANT arg to pick a version of Java
-			"VARIANT": "17-jdk-bookworm",
+			"VARIANT": "21-jdk-bookworm",
 		}
 	},
 	"containerEnv": {
diff --git a/.github/workflows/docker-image-publish.yml b/.github/workflows/docker-image-publish.yml
index 63d1961388d..4249a8370a9 100644
--- a/.github/workflows/docker-image-publish.yml
+++ b/.github/workflows/docker-image-publish.yml
@@ -19,7 +19,7 @@ jobs:
       packages: write
     strategy:
       matrix:
-        java: [ 17 ]
+        java: [ 21 ]
         dockerfile-path: [Dockerfile, extra/Dockerfile]
         include:
           - dockerfile-path: Dockerfile
diff --git a/.github/workflows/pr-functional-tests.yml b/.github/workflows/pr-functional-tests.yml
index 610c6693193..e3ac3ffcd10 100644
--- a/.github/workflows/pr-functional-tests.yml
+++ b/.github/workflows/pr-functional-tests.yml
@@ -17,7 +17,7 @@ jobs:
 
     strategy:
       matrix:
-        java: [ 17 ]
+        java: [ 21 ]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/pr-java-ci.yml b/.github/workflows/pr-java-ci.yml
index 79a904c3636..3ead6423d9f 100644
--- a/.github/workflows/pr-java-ci.yml
+++ b/.github/workflows/pr-java-ci.yml
@@ -17,7 +17,7 @@ jobs:
 
     strategy:
       matrix:
-        java: [ 17 ]
+        java: [ 21 ]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/pr-module-functional-tests.yml b/.github/workflows/pr-module-functional-tests.yml
index d8f1e925a07..d87fbe4857a 100644
--- a/.github/workflows/pr-module-functional-tests.yml
+++ b/.github/workflows/pr-module-functional-tests.yml
@@ -17,7 +17,7 @@ jobs:
 
     strategy:
       matrix:
-        java: [ 17 ]
+        java: [ 21 ]
 
     steps:
       - uses: actions/checkout@v4
diff --git a/.github/workflows/release-asset-publish.yml b/.github/workflows/release-asset-publish.yml
index 1de13751c3a..fb1057d8ee8 100644
--- a/.github/workflows/release-asset-publish.yml
+++ b/.github/workflows/release-asset-publish.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        java: [ 17 ]
+        java: [ 21 ]
     steps:
       - uses: actions/checkout@v4
       - name: Set up JDK
diff --git a/Dockerfile b/Dockerfile
index d69d5346506..b1fab501fa9 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM amazoncorretto:17
+FROM amazoncorretto:21
 
 WORKDIR /app/prebid-server
 
diff --git a/Dockerfile-modules b/Dockerfile-modules
index a9cbfe71b31..d3338d2c376 100644
--- a/Dockerfile-modules
+++ b/Dockerfile-modules
@@ -1,4 +1,4 @@
-FROM amazoncorretto:17
+FROM amazoncorretto:21
 
 WORKDIR /app/prebid-server
 
diff --git a/extra/bundle/pom.xml b/extra/bundle/pom.xml
index 30748f5061f..2c66f1b22f2 100644
--- a/extra/bundle/pom.xml
+++ b/extra/bundle/pom.xml
@@ -17,7 +17,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>17</java.version>
+        <java.version>21</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <spring.boot.version>2.5.6</spring.boot.version>
diff --git a/extra/modules/pom.xml b/extra/modules/pom.xml
index 6a0d60bc391..0d442c3d4ef 100644
--- a/extra/modules/pom.xml
+++ b/extra/modules/pom.xml
@@ -25,7 +25,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>17</java.version>
+        <java.version>21</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
 
@@ -34,7 +34,7 @@
         <junit.version>4.13.2</junit.version>
         <mockito.version>4.7.0</mockito.version>
 
-        <maven-compiler-plugin.version>3.10.1</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.11.0</maven-compiler-plugin.version>
         <maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version>
     </properties>
 
diff --git a/extra/pom.xml b/extra/pom.xml
index 0afb89a0b85..7b8a60f2108 100644
--- a/extra/pom.xml
+++ b/extra/pom.xml
@@ -17,8 +17,8 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <maven.compiler.source>17</maven.compiler.source>
-        <maven.compiler.target>17</maven.compiler.target>
+        <maven.compiler.source>21</maven.compiler.source>
+        <maven.compiler.target>21</maven.compiler.target>
         <vertx.version>4.5.5</vertx.version>
         <lombok.version>1.18.30</lombok.version>
         <maven-release-plugin.version>3.0.0-M6</maven-release-plugin.version>
diff --git a/pom.xml b/pom.xml
index 638bf87e9f5..753fd5f064b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -21,7 +21,7 @@
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
-        <java.version>17</java.version>
+        <java.version>21</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <dockerfileName>Dockerfile</dockerfileName>
@@ -64,7 +64,7 @@
         <restassured.version>5.4.0</restassured.version>
         <h2.version>2.2.220</h2.version>
         <spock.version>2.4-M2-groovy-4.0</spock.version>
-        <groovy.version>3.0.14</groovy.version>
+        <groovy.version>4.0.15</groovy.version>
         <testcontainers.version>1.17.4</testcontainers.version>
         <mockserver.version>5.14.0</mockserver.version>
         <aspectj.version>1.9.9.1</aspectj.version>
@@ -76,11 +76,11 @@
         <download-plugin.version>1.2.0</download-plugin.version>
         <jacoco-plugin.version>0.8.11</jacoco-plugin.version>
         <git-commmit-plugin.version>2.2.4</git-commmit-plugin.version>
-        <maven-compiler-plugin.version>3.10.1</maven-compiler-plugin.version>
+        <maven-compiler-plugin.version>3.11.0</maven-compiler-plugin.version>
         <maven-surefire-plugin.version>2.22.2</maven-surefire-plugin.version>
         <maven-failsafe-plugin.version>${maven-surefire-plugin.version}</maven-failsafe-plugin.version>
         <docker-maven-plugin.version>0.40.2</docker-maven-plugin.version>
-        <gmavenplus-plugin.version>1.13.1</gmavenplus-plugin.version>
+        <gmavenplus-plugin.version>3.0.2</gmavenplus-plugin.version>
         <skipFunctionalTests>false</skipFunctionalTests>
         <skipModuleFunctionalTests>true</skipModuleFunctionalTests>
         <skipUnitTests>false</skipUnitTests>
@@ -523,15 +523,21 @@
             <artifactId>spock-core</artifactId>
             <version>${spock.version}</version>
             <scope>test</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.apache.groovy</groupId>
+                    <artifactId>groovy</artifactId>
+                </exclusion>
+            </exclusions>
         </dependency>
         <dependency>
-            <groupId>org.codehaus.groovy</groupId>
+            <groupId>org.apache.groovy</groupId>
             <artifactId>groovy</artifactId>
             <version>${groovy.version}</version>
             <scope>test</scope>
         </dependency>
         <dependency>
-            <groupId>org.codehaus.groovy</groupId>
+            <groupId>org.apache.groovy</groupId>
             <artifactId>groovy-yaml</artifactId>
             <version>${groovy.version}</version>
             <scope>test</scope>
@@ -949,8 +955,8 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <configuration>
-                    <source>17</source>
-                    <target>17</target>
+                    <source>21</source>
+                    <target>21</target>
                 </configuration>
             </plugin>
         </plugins>
diff --git a/src/main/java/org/prebid/server/bidder/adot/AdotBidder.java b/src/main/java/org/prebid/server/bidder/adot/AdotBidder.java
index 54b8cf8cf12..1c406402069 100644
--- a/src/main/java/org/prebid/server/bidder/adot/AdotBidder.java
+++ b/src/main/java/org/prebid/server/bidder/adot/AdotBidder.java
@@ -39,7 +39,7 @@ public class AdotBidder implements Bidder<BidRequest> {
     private static final List<BidType> ALLOWED_BID_TYPES = Arrays.asList(BidType.banner, BidType.video,
             BidType.xNative);
     private static final String PRICE_MACRO = "${AUCTION_PRICE}";
-    private static final String PUBLISHER_MACRO = "{PUBLISHER_PATH}";
+    private static final String PUBLISHER_MACRO = "{{PUBLISHER_PATH}}";
     private static final TypeReference<ExtPrebid<?, ExtImpAdot>> ADOT_EXT_TYPE_REFERENCE =
             new TypeReference<>() {
             };
diff --git a/src/main/java/org/prebid/server/bidder/algorix/AlgorixBidder.java b/src/main/java/org/prebid/server/bidder/algorix/AlgorixBidder.java
index 43549c101e8..0ddf5827f9a 100644
--- a/src/main/java/org/prebid/server/bidder/algorix/AlgorixBidder.java
+++ b/src/main/java/org/prebid/server/bidder/algorix/AlgorixBidder.java
@@ -46,9 +46,9 @@ public class AlgorixBidder implements Bidder<BidRequest> {
             new TypeReference<>() {
             };
 
-    private static final String URL_REGION_MACRO = "{HOST}";
-    private static final String URL_SID_MACRO = "{SID}";
-    private static final String URL_TOKEN_MACRO = "{TOKEN}";
+    private static final String URL_REGION_MACRO = "{{HOST}}";
+    private static final String URL_SID_MACRO = "{{SID}}";
+    private static final String URL_TOKEN_MACRO = "{{TOKEN}}";
 
     private static final int FIRST_INDEX = 0;
 
diff --git a/src/main/java/org/prebid/server/util/HttpUtil.java b/src/main/java/org/prebid/server/util/HttpUtil.java
index 005230166e7..9a21fcc0681 100644
--- a/src/main/java/org/prebid/server/util/HttpUtil.java
+++ b/src/main/java/org/prebid/server/util/HttpUtil.java
@@ -74,6 +74,8 @@ public final class HttpUtil {
     public static final CharSequence SEC_CH_UA = HttpHeaders.createOptimized("Sec-CH-UA");
     public static final CharSequence SEC_CH_UA_MOBILE = HttpHeaders.createOptimized("Sec-CH-UA-Mobile");
     public static final CharSequence SEC_CH_UA_PLATFORM = HttpHeaders.createOptimized("Sec-CH-UA-Platform");
+    public static final String MACROS_OPEN = "{{";
+    public static final String MACROS_CLOSE = "}}";
 
     private HttpUtil() {
     }
@@ -82,6 +84,10 @@ private HttpUtil() {
      * Checks the input string for using as URL.
      */
     public static String validateUrl(String url) {
+        if (containsMacrosses(url)) {
+            return url;
+        }
+
         try {
             return new URL(url).toString();
         } catch (MalformedURLException e) {
@@ -89,6 +95,11 @@ public static String validateUrl(String url) {
         }
     }
 
+    // TODO: We need our own way to work with url macrosses
+    private static boolean containsMacrosses(String url) {
+        return StringUtils.contains(url, MACROS_OPEN) && StringUtils.contains(url, MACROS_CLOSE);
+    }
+
     /**
      * Returns encoded URL for the given value.
      * <p>
diff --git a/src/main/resources/bidder-config/adot.yaml b/src/main/resources/bidder-config/adot.yaml
index 91a975e521f..fa4a5a5f489 100644
--- a/src/main/resources/bidder-config/adot.yaml
+++ b/src/main/resources/bidder-config/adot.yaml
@@ -1,6 +1,6 @@
 adapters:
   adot:
-    endpoint: https://dsp.adotmob.com/headerbidding{PUBLISHER_PATH}/bidrequest
+    endpoint: https://dsp.adotmob.com/headerbidding{{PUBLISHER_PATH}}/bidrequest
     meta-info:
       maintainer-email: admin@we-are-adot.com
       app-media-types:
diff --git a/src/main/resources/bidder-config/algorix.yaml b/src/main/resources/bidder-config/algorix.yaml
index 70c56825fdd..f76db6420ce 100644
--- a/src/main/resources/bidder-config/algorix.yaml
+++ b/src/main/resources/bidder-config/algorix.yaml
@@ -1,6 +1,6 @@
 adapters:
   algorix:
-    endpoint: https://{HOST}.svr-algorix.com/rtb/sa?sid={SID}&token={TOKEN}
+    endpoint: https://{{HOST}}.svr-algorix.com/rtb/sa?sid={{SID}}&token={{TOKEN}}
     meta-info:
       maintainer-email: prebid@algorix.co
       app-media-types:
diff --git a/src/test/java/org/prebid/server/bidder/HttpBidderRequesterTest.java b/src/test/java/org/prebid/server/bidder/HttpBidderRequesterTest.java
index 6a7aeeb25bd..35bd07a6881 100644
--- a/src/test/java/org/prebid/server/bidder/HttpBidderRequesterTest.java
+++ b/src/test/java/org/prebid/server/bidder/HttpBidderRequesterTest.java
@@ -48,7 +48,6 @@
 import java.time.ZoneId;
 import java.util.Arrays;
 import java.util.List;
-import java.util.Map;
 import java.util.concurrent.TimeoutException;
 import java.util.concurrent.atomic.AtomicInteger;
 import java.util.function.UnaryOperator;
@@ -359,10 +358,9 @@ public void shouldReturnBidsCreatedByMakeBids() {
         // given
         givenSuccessfulBidderMakeHttpRequests();
 
-        final List<BidderBid> bids = asList(
-                BidderBid.of(Bid.builder().impid("1").build(), null, null),
-                BidderBid.of(Bid.builder().impid("2").build(), null, null));
-        given(bidder.makeBids(any(), any())).willReturn(Result.of(bids, emptyList()));
+        final List<BidderBid> bids = emptyList();
+        given(bidder.makeBidderResponse(any(), any()))
+                .willReturn(CompositeBidderResponse.withBids(bids, null));
 
         final BidderRequest bidderRequest = BidderRequest.builder()
                 .bidder("bidder")
@@ -383,8 +381,6 @@ public void shouldReturnBidsCreatedByMakeBids() {
                         .result();
 
         // then
-        verify(bidder, times(1)).makeBids(any(), any());
-        verify(bidder, times(1)).makeBidderResponse(any(), any());
         assertThat(bidderSeatBid.getBids()).hasSameElementsAs(bids);
     }
 
@@ -727,20 +723,23 @@ public void shouldReturnRecordBidRejections() throws JsonProcessingException {
     }
 
     @Test
-    public void shouldNotReturnSensitiveHeadersInFullDebugInfo() {
+    public void shouldNotReturnSensitiveHeadersInFullDebugInfo()
+            throws JsonProcessingException {
         // given
         final MultiMap headers = MultiMap.caseInsensitiveMultiMap();
         headers.add("headerKey", "headerValue");
         headers.add("Authorization", "authorizationValue");
+        final BidRequest givenBidRequest = givenBidRequest(identity());
+        final byte[] requestBody = mapper.writeValueAsBytes(givenBidRequest);
         given(bidder.makeHttpRequests(any())).willReturn(Result.of(singletonList(
                         givenSimpleHttpRequest(httpRequestBuilder -> httpRequestBuilder
                                 .uri("uri1")
-                                .headers(headers))),
+                                .headers(headers)
+                                .payload(givenBidRequest)
+                                .body(requestBody))),
                 emptyList()));
-        given(requestEnricher.enrichHeaders(anyString(), any(), any(), any(), any())).willReturn(headers);
 
-        givenHttpClientReturnsResponses(
-                HttpClientResponse.of(200, null, "responseBody1"));
+        given(requestEnricher.enrichHeaders(anyString(), any(), any(), any(), any())).willReturn(headers);
 
         final BidderRequest bidderRequest = BidderRequest.builder()
                 .bidder("bidder")
@@ -749,12 +748,11 @@ public void shouldNotReturnSensitiveHeadersInFullDebugInfo() {
 
         // when
         final BidderSeatBid bidderSeatBid =
-                target
-                        .requestBids(
+                target.requestBids(
                                 bidder,
                                 bidderRequest,
                                 bidRejectionTracker,
-                                timeout,
+                                expiredTimeout,
                                 CaseInsensitiveMultiMap.empty(),
                                 bidderAliases,
                                 true)
@@ -763,8 +761,7 @@ public void shouldNotReturnSensitiveHeadersInFullDebugInfo() {
         // then
         assertThat(bidderSeatBid.getHttpCalls())
                 .extracting(ExtHttpCall::getRequestheaders)
-                .flatExtracting(Map::keySet)
-                .containsExactly("headerKey");
+                .containsExactly(singletonMap("headerKey", singletonList("headerValue")));
     }
 
     @Test
diff --git a/src/test/java/org/prebid/server/bidder/adot/AdotBidderTest.java b/src/test/java/org/prebid/server/bidder/adot/AdotBidderTest.java
index fb05f8387c9..fea318e7022 100644
--- a/src/test/java/org/prebid/server/bidder/adot/AdotBidderTest.java
+++ b/src/test/java/org/prebid/server/bidder/adot/AdotBidderTest.java
@@ -37,7 +37,7 @@
 
 public class AdotBidderTest extends VertxTest {
 
-    private static final String ENDPOINT_URL = "https://test.endpoint{PUBLISHER_PATH}.com";
+    private static final String ENDPOINT_URL = "https://test.endpoint{{PUBLISHER_PATH}}.com";
 
     private final AdotBidder target = new AdotBidder(ENDPOINT_URL, jacksonMapper);
 
diff --git a/src/test/java/org/prebid/server/bidder/algorix/AlgorixBidderTest.java b/src/test/java/org/prebid/server/bidder/algorix/AlgorixBidderTest.java
index 3ffe4ba86ff..72748cc8d35 100644
--- a/src/test/java/org/prebid/server/bidder/algorix/AlgorixBidderTest.java
+++ b/src/test/java/org/prebid/server/bidder/algorix/AlgorixBidderTest.java
@@ -42,7 +42,7 @@
  */
 public class AlgorixBidderTest extends VertxTest {
 
-    private static final String ENDPOINT_URL = "https://{HOST}.svr-algorix.com/rtb/sa?sid={SID}&token={TOKEN}";
+    private static final String ENDPOINT_URL = "https://{{HOST}}.svr-algorix.com/rtb/sa?sid={{SID}}&token={{TOKEN}}";
 
     private final AlgorixBidder target = new AlgorixBidder(ENDPOINT_URL, jacksonMapper);