diff --git a/projects/mysql.com/package.yml b/projects/mysql.com/package.yml
index 7dfd9838..cf604853 100644
--- a/projects/mysql.com/package.yml
+++ b/projects/mysql.com/package.yml
@@ -7,7 +7,7 @@ versions:
   strip: /^mysql-/
 
 dependencies:
-  unicode.org: '>=71'
+  unicode.org: ^71
   libevent.org: ^2
   lz4.org: ^1
   openssl.org: ^1.1
@@ -54,7 +54,7 @@ build:
       - -DWITH_PROTOBUF=system
       - -DWITH_SSL=system
       # FIXME: starting with 8.0.33, mysql reports:
-      # -- Found ZLIB: /Users/jacob/.tea/zlib.net/v1.2.13/lib/libz.dylib (found version "1.2.13")  
+      # -- Found ZLIB: /Users/jacob/.tea/zlib.net/v1.2.13/lib/libz.dylib (found version "1.2.13")
       # CMake Error at cmake/zlib.cmake:118 (MESSAGE):
       #   Cannot find system zlib libraries.
       # Call Stack (most recent call first):
diff --git a/projects/nodejs.org/package.yml b/projects/nodejs.org/package.yml
index 42090c89..aa2b7624 100644
--- a/projects/nodejs.org/package.yml
+++ b/projects/nodejs.org/package.yml
@@ -9,7 +9,7 @@ companions:
   npmjs.com: '*'
 
 dependencies:
-  unicode.org: '>=71'
+  unicode.org: ^71
   openssl.org: 1.1
   zlib.net: 1
 
diff --git a/projects/php.net/package.yml b/projects/php.net/package.yml
index 9de02b95..f17b8b84 100644
--- a/projects/php.net/package.yml
+++ b/projects/php.net/package.yml
@@ -22,7 +22,7 @@ dependencies:
   openssl.org: '*'
   pcre.org/v2: '>=10.30'
   sqlite.org: '*'
-  unicode.org: '*'
+  unicode.org: ^71
   gnu.org/libiconv: '*'
   kerberos.org: '*'
   gnome.org/libxml2: '>=2.9.0'
diff --git a/projects/tectonic-typesetting.github.io/package.yml b/projects/tectonic-typesetting.github.io/package.yml
index db3af0a9..aa46f157 100644
--- a/projects/tectonic-typesetting.github.io/package.yml
+++ b/projects/tectonic-typesetting.github.io/package.yml
@@ -12,7 +12,7 @@ dependencies:
   harfbuzz.org: "*"
   libpng.org: "*"
   openssl.org: ^1.1
-  unicode.org: "*"
+  unicode.org: ^71
 
 build:
   dependencies: