diff --git a/packages/mcs-lite-admin-web/package.json b/packages/mcs-lite-admin-web/package.json
index 1332d0712..69ea2b3c8 100644
--- a/packages/mcs-lite-admin-web/package.json
+++ b/packages/mcs-lite-admin-web/package.json
@@ -33,7 +33,7 @@
   },
   "devDependencies": {
     "@cycle/http": "14.9.0",
-    "@cycle/rxjs-run": "8.0.0",
+    "@cycle/rxjs-run": "8.1.0",
     "@cycle/storage": "5.0.3",
     "@cycle/time": "0.8.0",
     "browser-locale": "1.0.3",
diff --git a/packages/mcs-lite-mobile-web/package.json b/packages/mcs-lite-mobile-web/package.json
index b2779f717..9e8944c16 100644
--- a/packages/mcs-lite-mobile-web/package.json
+++ b/packages/mcs-lite-mobile-web/package.json
@@ -33,7 +33,7 @@
   },
   "devDependencies": {
     "@cycle/http": "14.9.0",
-    "@cycle/rxjs-run": "8.0.0",
+    "@cycle/rxjs-run": "8.1.0",
     "@cycle/time": "0.8.0",
     "browser-locale": "1.0.3",
     "enzyme": "3.3.0",
diff --git a/yarn.lock b/yarn.lock
index 1a4f1f102..c65937f0a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -578,12 +578,13 @@
   dependencies:
     xstream "10.x"
 
-"@cycle/rxjs-run@8.0.0":
-  version "8.0.0"
-  resolved "https://registry.yarnpkg.com/@cycle/rxjs-run/-/rxjs-run-8.0.0.tgz#fc5fa54b5a213190d26c08aa032e24fea73d1392"
+"@cycle/rxjs-run@8.1.0":
+  version "8.1.0"
+  resolved "https://registry.yarnpkg.com/@cycle/rxjs-run/-/rxjs-run-8.1.0.tgz#97a09857b3e71bc7b23112591f77e2a66ae277fe"
   dependencies:
     "@cycle/run" "4.x"
-    rxjs "5.5.x"
+    rxjs "< 6.0.0"
+    symbol-observable "^1.2.0"
     xstream "11.x"
 
 "@cycle/storage@5.0.3":
@@ -11664,12 +11665,18 @@ rx@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/rx/-/rx-4.1.0.tgz#a5f13ff79ef3b740fe30aa803fb09f98805d4782"
 
-rxjs@5.5.10, rxjs@5.5.x, rxjs@^5.4.2, rxjs@^5.5.10, rxjs@^5.5.6:
+rxjs@5.5.10, rxjs@^5.4.2, rxjs@^5.5.10, rxjs@^5.5.6:
   version "5.5.10"
   resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.10.tgz#fde02d7a614f6c8683d0d1957827f492e09db045"
   dependencies:
     symbol-observable "1.0.1"
 
+"rxjs@< 6.0.0":
+  version "5.5.12"
+  resolved "https://registry.yarnpkg.com/rxjs/-/rxjs-5.5.12.tgz#6fa61b8a77c3d793dbaf270bee2f43f652d741cc"
+  dependencies:
+    symbol-observable "1.0.1"
+
 safe-buffer@5.1.1, safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.1, safe-buffer@~5.1.0, safe-buffer@~5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.1.tgz#893312af69b2123def71f57889001671eeb2c853"
@@ -12625,7 +12632,7 @@ symbol-observable@1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.0.1.tgz#8340fc4702c3122df5d22288f88283f513d3fdd4"
 
-symbol-observable@1.2.0, symbol-observable@^1.0.2, symbol-observable@^1.0.3, symbol-observable@^1.0.4:
+symbol-observable@1.2.0, symbol-observable@^1.0.2, symbol-observable@^1.0.3, symbol-observable@^1.0.4, symbol-observable@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/symbol-observable/-/symbol-observable-1.2.0.tgz#c22688aed4eab3cdc2dfeacbb561660560a00804"