diff --git a/package-lock.json b/package-lock.json
index d71db10..2ff2643 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1141,6 +1141,14 @@
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       "dev": true
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+    "end-of-stream": {
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+      "resolved": "https://registry.npmjs.org/end-of-stream/-/end-of-stream-1.4.4.tgz",
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+      "requires": {
+        "once": "^1.4.0"
+      }
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       "resolved": "https://registry.npmjs.org/entities/-/entities-1.0.0.tgz",
@@ -1433,12 +1441,12 @@
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-      "version": "0.5.1",
-      "resolved": "https://registry.npmjs.org/execa/-/execa-0.5.1.tgz",
-      "integrity": "sha1-3j+4XLjW6RyFvLzrFkWBeFy1ezY=",
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/execa/-/execa-1.0.0.tgz",
+      "integrity": "sha512-adbxcyWV46qiHyvSp50TKt05tB4tK3HcmF7/nxfAdhnox83seTDbwnaqKO4sXRy7roHAIFqJP/Rw/AuEbX61LA==",
       "requires": {
-        "cross-spawn": "^4.0.0",
-        "get-stream": "^2.2.0",
+        "cross-spawn": "^6.0.0",
+        "get-stream": "^4.0.0",
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         "npm-run-path": "^2.0.0",
         "p-finally": "^1.0.0",
@@ -1447,22 +1455,16 @@
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-          "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-4.0.2.tgz",
-          "integrity": "sha1-e5JHYhwjrf3ThWAEqCPL45dCTUE=",
+          "version": "6.0.5",
+          "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-6.0.5.tgz",
+          "integrity": "sha512-eTVLrBSt7fjbDygz805pMnstIs2VTBNkRm0qxZd+M7A5XDdxVRWO5MxGBXZhjY4cqLYLdtrGqRf8mBPmzwSpWQ==",
           "requires": {
-            "lru-cache": "^4.0.1",
+            "nice-try": "^1.0.4",
+            "path-key": "^2.0.1",
+            "semver": "^5.5.0",
+            "shebang-command": "^1.2.0",
             "which": "^1.2.9"
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-        },
-        "lru-cache": {
-          "version": "4.1.3",
-          "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.3.tgz",
-          "integrity": "sha512-fFEhvcgzuIoJVUF8fYr5KR0YqxD238zgObTps31YdADwPPAp82a4M8TrckkWyx7ekNlf9aBcVn81cFwwXngrJA==",
-          "requires": {
-            "pseudomap": "^1.0.2",
-            "yallist": "^2.1.2"
-          }
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@@ -1731,12 +1733,11 @@
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-      "version": "2.3.1",
-      "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-2.3.1.tgz",
-      "integrity": "sha1-Xzj5PzRgCWZu4BUKBUFn+Rvdld4=",
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/get-stream/-/get-stream-4.1.0.tgz",
+      "integrity": "sha512-GMat4EJ5161kIy2HevLlr4luNjBgvmj413KaQA7jt4V8B4RDsfpHk7WQ9GVqfYyyx8OS/L66Kox+rJRNklLK7w==",
       "requires": {
-        "object-assign": "^4.0.1",
-        "pinkie-promise": "^2.0.0"
+        "pump": "^3.0.0"
       }
     },
     "getpass": {
@@ -2764,6 +2765,11 @@
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+    "nice-try": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/nice-try/-/nice-try-1.0.5.tgz",
+      "integrity": "sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ=="
+    },
     "node-cljfmt": {
       "version": "0.5.3",
       "resolved": "https://registry.npmjs.org/node-cljfmt/-/node-cljfmt-0.5.3.tgz",
@@ -3119,6 +3125,15 @@
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       "integrity": "sha1-33+8cO6AwYpkIt/6sv5QgYjNzBg="
     },
+    "pump": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/pump/-/pump-3.0.0.tgz",
+      "integrity": "sha512-LwZy+p3SFs1Pytd/jYct4wpv49HiYCqd9Rlc5ZVdk0V+8Yzv6jR5Blk3TRmPL1ft69TxP0IMZGJ+WPFU2BFhww==",
+      "requires": {
+        "end-of-stream": "^1.1.0",
+        "once": "^1.3.1"
+      }
+    },
     "punycode": {
       "version": "1.4.1",
       "resolved": "https://registry.npmjs.org/punycode/-/punycode-1.4.1.tgz",
@@ -3460,21 +3475,26 @@
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-      "version": "0.3.0",
-      "resolved": "https://registry.npmjs.org/shell-env/-/shell-env-0.3.0.tgz",
-      "integrity": "sha1-IlAzkCKYkWW9pOt784Ov6qqS3DQ=",
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/shell-env/-/shell-env-2.2.0.tgz",
+      "integrity": "sha512-C66xSe0P7PexRwbXHqwqf31o6JgMzk4S1Mc5yPULpSK3cUn1WoWrGM1OV0qUA1ec3QZvSqTaQgOqsONCB9F/3w==",
       "requires": {
-        "default-shell": "^1.0.0",
-        "execa": "^0.5.0",
-        "strip-ansi": "^3.0.0"
+        "default-shell": "^1.0.1",
+        "execa": "^1.0.0",
+        "strip-ansi": "^5.0.0"
       },
       "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.1",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.1.tgz",
+          "integrity": "sha512-ILlv4k/3f6vfQ4OoP2AGvirOktlQ98ZEL1k9FaQjxa3L1abBgbuTDAdPOpvbGncC0BTVQrl+OM8xZGK6tWXt7g=="
+        },
         "strip-ansi": {
-          "version": "3.0.1",
-          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
-          "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "version": "5.2.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-5.2.0.tgz",
+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
           "requires": {
-            "ansi-regex": "^2.0.0"
+            "ansi-regex": "^4.1.0"
           }
         }
       }
diff --git a/package.json b/package.json
index 62f950e..6635181 100644
--- a/package.json
+++ b/package.json
@@ -213,7 +213,7 @@
     "remark": "6.0.1",
     "season": "^6.0.2",
     "semver": "^5.5.0",
-    "shell-env": "^0.3.0",
+    "shell-env": "^2.2.0",
     "space-pen": "5.1.2",
     "strip-json-comments": "^2.0.1",
     "temp": "^0.8.3",