diff --git a/tools_webrtc/ios/client.webrtc/iOS32_Debug.json b/tools_webrtc/ios/client.webrtc/iOS32_Debug.json
index 4f86af67a0..49b8f5b5fa 100644
--- a/tools_webrtc/ios/client.webrtc/iOS32_Debug.json
+++ b/tools_webrtc/ios/client.webrtc/iOS32_Debug.json
@@ -2,7 +2,7 @@
   "comments": [
     "Builder for 32-bit devices."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "ios_enable_code_signing=false",
diff --git a/tools_webrtc/ios/client.webrtc/iOS32_Release.json b/tools_webrtc/ios/client.webrtc/iOS32_Release.json
index 1b5ba85d97..9098b4487a 100644
--- a/tools_webrtc/ios/client.webrtc/iOS32_Release.json
+++ b/tools_webrtc/ios/client.webrtc/iOS32_Release.json
@@ -2,7 +2,7 @@
   "comments": [
     "Builder for 32-bit devices."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "dcheck_always_on=true",
diff --git a/tools_webrtc/ios/client.webrtc/iOS32_Sim_Debug_(iOS_9.0).json b/tools_webrtc/ios/client.webrtc/iOS32_Sim_Debug_(iOS_9.0).json
index b3c0028f59..1017a59ce5 100644
--- a/tools_webrtc/ios/client.webrtc/iOS32_Sim_Debug_(iOS_9.0).json
+++ b/tools_webrtc/ios/client.webrtc/iOS32_Sim_Debug_(iOS_9.0).json
@@ -2,7 +2,7 @@
   "comments": [
     "Tests for 32-bit iOS simulators."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "is_component_build=false",
diff --git a/tools_webrtc/ios/client.webrtc/iOS64_Debug.json b/tools_webrtc/ios/client.webrtc/iOS64_Debug.json
index 5d7b77bc3d..342b2cfb09 100644
--- a/tools_webrtc/ios/client.webrtc/iOS64_Debug.json
+++ b/tools_webrtc/ios/client.webrtc/iOS64_Debug.json
@@ -2,7 +2,7 @@
   "comments": [
     "Builder for 64-bit devices."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "ios_enable_code_signing=false",
diff --git a/tools_webrtc/ios/client.webrtc/iOS64_Release.json b/tools_webrtc/ios/client.webrtc/iOS64_Release.json
index 71242ae740..480681063f 100644
--- a/tools_webrtc/ios/client.webrtc/iOS64_Release.json
+++ b/tools_webrtc/ios/client.webrtc/iOS64_Release.json
@@ -2,7 +2,7 @@
   "comments": [
     "Builder for 64-bit devices."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "dcheck_always_on=true",
diff --git a/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_10.0).json b/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_10.0).json
index ad87ca184e..a85091a0f8 100644
--- a/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_10.0).json
+++ b/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_10.0).json
@@ -2,7 +2,7 @@
   "comments": [
     "Tests for 64-bit iOS simulators."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "is_component_build=false",
diff --git a/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_11.0).json b/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_11.0).json
index 0f71b12c13..af7e82d41a 100644
--- a/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_11.0).json
+++ b/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_11.0).json
@@ -2,7 +2,7 @@
   "comments": [
     "Tests for 64-bit iOS simulators."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "is_component_build=false",
diff --git a/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_9.0).json b/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_9.0).json
index d13fa95d36..6ac5b22c6e 100644
--- a/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_9.0).json
+++ b/tools_webrtc/ios/client.webrtc/iOS64_Sim_Debug_(iOS_9.0).json
@@ -2,7 +2,7 @@
   "comments": [
     "Tests for 64-bit iOS simulators."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "is_component_build=false",
diff --git a/tools_webrtc/ios/tryserver.webrtc/ios32_sim_ios9_dbg.json b/tools_webrtc/ios/tryserver.webrtc/ios32_sim_ios9_dbg.json
index 6c4d698035..1f5ad2c1ea 100644
--- a/tools_webrtc/ios/tryserver.webrtc/ios32_sim_ios9_dbg.json
+++ b/tools_webrtc/ios/tryserver.webrtc/ios32_sim_ios9_dbg.json
@@ -2,7 +2,7 @@
   "comments": [
     "Tests for 32-bit iOS simulators."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "is_component_build=false",
diff --git a/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios10_dbg.json b/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios10_dbg.json
index 25573e89a8..2f130942af 100644
--- a/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios10_dbg.json
+++ b/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios10_dbg.json
@@ -2,7 +2,7 @@
   "comments": [
     "Tests for 64-bit iOS simulators."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "is_component_build=false",
diff --git a/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios11_dbg.json b/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios11_dbg.json
index eb5f26ada0..6804a60d2e 100644
--- a/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios11_dbg.json
+++ b/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios11_dbg.json
@@ -2,7 +2,7 @@
   "comments": [
     "Tests for 64-bit iOS simulators."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "is_component_build=false",
diff --git a/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios9_dbg.json b/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios9_dbg.json
index 0cabd24023..a246584c88 100644
--- a/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios9_dbg.json
+++ b/tools_webrtc/ios/tryserver.webrtc/ios64_sim_ios9_dbg.json
@@ -2,7 +2,7 @@
   "comments": [
     "Tests for 64-bit iOS simulators."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "is_component_build=false",
diff --git a/tools_webrtc/ios/tryserver.webrtc/ios_arm64_dbg.json b/tools_webrtc/ios/tryserver.webrtc/ios_arm64_dbg.json
index 07e2e6e30c..8c78e743b6 100644
--- a/tools_webrtc/ios/tryserver.webrtc/ios_arm64_dbg.json
+++ b/tools_webrtc/ios/tryserver.webrtc/ios_arm64_dbg.json
@@ -2,7 +2,7 @@
   "comments": [
     "Builder for 64-bit devices."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "ios_enable_code_signing=false",
diff --git a/tools_webrtc/ios/tryserver.webrtc/ios_arm64_rel.json b/tools_webrtc/ios/tryserver.webrtc/ios_arm64_rel.json
index 1f346dd6e1..c60add893d 100644
--- a/tools_webrtc/ios/tryserver.webrtc/ios_arm64_rel.json
+++ b/tools_webrtc/ios/tryserver.webrtc/ios_arm64_rel.json
@@ -2,7 +2,7 @@
   "comments": [
     "Builder for 64-bit devices."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "dcheck_always_on=true",
diff --git a/tools_webrtc/ios/tryserver.webrtc/ios_dbg.json b/tools_webrtc/ios/tryserver.webrtc/ios_dbg.json
index ea039ca420..10f87be9af 100644
--- a/tools_webrtc/ios/tryserver.webrtc/ios_dbg.json
+++ b/tools_webrtc/ios/tryserver.webrtc/ios_dbg.json
@@ -2,7 +2,7 @@
   "comments": [
     "Builder for 32-bit devices."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "ios_enable_code_signing=false",
diff --git a/tools_webrtc/ios/tryserver.webrtc/ios_rel.json b/tools_webrtc/ios/tryserver.webrtc/ios_rel.json
index 154a3ed92a..663c453d93 100644
--- a/tools_webrtc/ios/tryserver.webrtc/ios_rel.json
+++ b/tools_webrtc/ios/tryserver.webrtc/ios_rel.json
@@ -2,7 +2,7 @@
   "comments": [
     "Builder for 32-bit devices."
   ],
-  "xcode version": "8.0",
+  "xcode version": "9.0",
   "gn_args": [
     "goma_dir=\"$(goma_dir)\"",
     "dcheck_always_on=true",