diff --git a/appveyor.yml b/appveyor.yml
index 6a0ff47b642..14cadd2d785 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -7,7 +7,7 @@ environment:
   # use the most aggressive compressing because .gradle is HUGE
   APPVEYOR_CACHE_ENTRY_ZIP_ARGS: -t7z -m0=lzma2 -mx=9
   JAVA_HOME: C:\Program Files\Java\jdk1.8.0
-  ORG_GRADLE_PROJECT_ideaVersion: 2018.1
+  ORG_GRADLE_PROJECT_ideaVersion: 2018.1.5
   ORG_GRADLE_PROJECT_sinceBuild: 181
   RUST_VERSION: 1.26.2
 
diff --git a/gradle.properties b/gradle.properties
index c8aecfbdb90..ba597f87fc3 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,5 +1,5 @@
-ideaVersion=2018.1.1
-clionVersion=2018.1.1
+ideaVersion=2018.1.5
+clionVersion=2018.1.5
 
 # please see http://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/build_number_ranges.html for description
 sinceBuild=181.4048