diff --git a/dependencySubstitutions.txt b/dependencySubstitutions.txt
index 5661263..cae8411 100644
--- a/dependencySubstitutions.txt
+++ b/dependencySubstitutions.txt
@@ -1 +1,2 @@
-substitute from: 'org.slf4j:slf4j-api:1.7.21', toVersion: '1.7.25'
\ No newline at end of file
+substitute from: 'org.slf4j:slf4j-api:1.7.21', toVersion: '1.7.25'
+substitute from: 'com.github.mmazi:rescu:1.9.0', toVersion: '1.9.1'
\ No newline at end of file
diff --git a/server_extensions_extra/build.gradle b/server_extensions_extra/build.gradle
index 78095b4..3c127ce 100644
--- a/server_extensions_extra/build.gradle
+++ b/server_extensions_extra/build.gradle
@@ -22,7 +22,7 @@ dependencies {
     compile(group: 'com.azazar', name: 'bitcoin-json-rpc-client', version: '1.0')
     compile(group: 'org.slf4j', name: 'slf4j-api', version: '1.7.25')
     compile(group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.25')
-    compile(group: 'com.github.mmazi', name: 'rescu', version: '1.9.0')
+    compile(group: 'com.github.mmazi', name: 'rescu', version: '1.9.1')
     compile(group: 'javax.ws.rs', name: 'javax.ws.rs-api', version: '2.0.1')
     compile(group: 'com.fasterxml.jackson.core', name: 'jackson-annotations', version: '2.8.0')
     compile(group: 'org.knowm.xchange', name: 'xchange-core', version: '4.2.1')